Caring for Trees & Shrubs

On my fall walks last year, I was surprised (and a bit saddened) to see how many young trees and shrubs hadn't survived. Most were planted in new areas and simply didn't get the TLC they needed to settle in. And as anyone who's ever replaced a tree knows—your wallet feels it.

We love seeing you at the greenhouse in spring, but we want those trips to be for the fun stuff, not because you're replacing half your yard. Let's help your trees and shrubs get established properly so they can thrive and you can spend your spring dreaming up new gardening projects instead.

The 2026 Garden Colour Trends

What is the Pantone Colour of the Year?

To be quite honest with you, I didn't know that a Pantone Colour of the Year existed, which in retrospect is a bit amazing and affirming of the question I often receive from friends and family: "Do you live under a rock?" Because if you think about it, of course there's a Colour of the Year! Each season there are popular colours in clothing and design. Suddenly everything is lilac or royal blue, and it's not by chance, someone decides these things. A huge factor in these trends is Pantone. Each year, Pantone picks a Colour of the Year that aims to capture the global mood. The colour influences fashion, design, and beauty trends, including garden design. For the first time ever, they chose a white, Cloud Dancer White to be specific.

Water-Wise Plants

Summer in Alberta is often hot and dry which can pose challenges for gardeners. Dry heat often means extra watering and garden maintenance, but this doesn't stop us from wanting to beautify our yards. If anything, we want to be outside enjoying them more, savouring the long days of our short summer. Choosing "water-wise" plants can help reduce both water use and maintenance, so you can spend less time watering and more time enjoying your garden (the environment and your bank account will thank you too). 

Water-Wise Gardening

Water conservation has become an increasingly important topic in the gardening world. As we think more intentionally about how to be good stewards of the environment and use our resources wisely, water is often one of the first things to consider. Gardening offers countless environmental benefits — from supporting biodiversity and improving soil and water quality to purifying the air and reducing noise. However, gardens and landscapes can also be significant water users.

Water-wise gardening is about much more than cutting back during times of drought. Thoughtful watering practices not only support the environment, but can also lower your water bill, reduce garden maintenance, and lead to healthier plants overall. Below are a few practical ideas you can try this year to decrease water use, improve plant health, and stay prepared if water restrictions are put in place during dry periods.

Side note: One area of huge importance is plant choice, which I'll be addressing in my next blog — stay tuned! Click here to read

Grow A Tea Garden

If you're anything like us here at Wallish Greenhouses, you've already started dreaming about your spring garden — even as the snow piles up and you're curled up on the couch with a hot cup of tea. During one of those quiet winter moments, my inspiration for this year's project was born: a tea garden!

Our Favourite Garden Moments (2025)

We love growing and selling plants, but once they head home with you, their story is really just beginning. And even though we're all big gardeners here, we rarely get to show you what our plants look like once they've settled in and reached their full potential. Most don't hit their full glory until later in the season—and some trees, shrubs, and perennials take a few years to truly shine. So this year, we thought we'd try something new: sharing some of our favourite garden moments from the year. Not just snapshots from the greenhouse, but photos from our staff of the "best of 2025." We hope you love them as much as we do!

Caring (less) for Houseplants in the Winter

Houseplants add so much life to an indoor space, but as we get deeper into the winter months it can be challenging to keep them alive, especially if you like to dote on your plants. So what’s the trick to getting through winter? To put it simply, a little more dusting the leaves and a little less watering – but perhaps a few specifics would help. Here are 5 tips to help your plant friends make it through the winter. 

Perennial Lifespan - PSA: Not all perennials last forever!

When we think about gardening, we generally categorize plants into two tidy little boxes: annuals and perennials. Annuals are the plants that do not overwinter; we plant them in the spring, and they die in the fall as things get frosty outside (live fast, die young). Perennials, on the other hand, will overwinter and come back each spring, year after year — or so we’ve been told. It’s not an untrue definition, but it’s by no means a complete guide on how to think about perennials, especially when living in colder climates like Edmonton, Alberta. So let’s get into it!

Top 5 Annuals for Shade

Shady spots in the garden don’t have to mean a lack of colour or interest. While it's easy to default to greenery, there are plenty of annuals that thrive in low light and still offer showy blooms or striking foliage. In this post, we’re sharing five of our favourite shade-loving annuals that do especially well in the Edmonton area.

The Top 5 Sun Annuals

We’ve already shared our top picks for sun and shade-loving perennials — now it’s time to shine a light on annuals! These five favourites are well-suited to the Edmonton area and offer big, beautiful colour with minimal upkeep. Whether you’re filling containers, garden beds, or borders, these tried-and-true annuals are sure to brighten your space all season long.

Design Your Own Container Like a Pro

Designing a stunning container is easier than you think! With just a few simple steps, you can create a professional-looking arrangement using the Thriller, Filler, and Spiller Method.

Top 5 Shade Perennials

If you've been following along, you know we're diving into a series focused on easy-to-grow plants in the Edmonton area. While I've mainly been addressing new gardeners, this series is for everyone. Whether you're a seasoned pro tackling a new shade garden or someone who's recently moved and is planning your first perennial bed, we've got something for you. No matter your experience level, we'll highlight some fantastic plants for Edmonton's climate and share essential care tips to help you thrive in your gardening journey. All five of our top picks are cold-hardy and low-maintenance — perfect for Alberta’s climate. For the best results, we recommend enriching your soil with quality compost before planting to boost nutrients and support healthy growth.

Sun Lovin' Perennials

As a new gardener, it can be difficult to know where to start. In my first year, I was extremely ambitious, filling my cart with whatever plants caught my fancy. I didn’t consider the level of care each plant required, and before long, I was dealing with a garden full of pests and crispy plants. The next year, I found myself more tentative to begin. I didn’t want to repeat my previous mistakes, but I wasn’t quite sure which plants were best for my yard and how to properly care for them. 

If you can relate, let me help you out with some practical tips: start small, and begin with what’s tried and true. Once you gain more knowledge and confidence in your gardening skills, you can gradually explore a wider variety of plants.

In the next few blogs, I’ll walk you through some tried-and-true plant options for the Edmonton area and the basics of caring for them. All the plants below are cold hardy and relatively low maintenance making them perfect for Edmonton and newer gardeners. Let’s start with sun-loving perennials that thrive in our region’s climate.

New Trees & Shrubs 2025

Get a head start on your greenhouse shopping by browsing our 2025 collection of new trees and shrubs and start planning your garden today.

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New Perennials 2025

Explore our latest perennial selections for the 2025 season! With exciting new varieties and vibrant colours, now’s the perfect time to start planning your garden. There’s something for every green thumb to fall in love with.

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New Annuals for 2025

We’re excited to share our brand-new 2025 Annuals Catalogue with you! Inside, you’ll find a handpicked collection of our favourite plants for the season – from totally new varieties to fresh colours we’re buzzing about.

Take a peek and get inspired for your next planting season – we think you’re going to love what’s in store!

Design a Backyard Oasis

In the hustle and bustle of daily life, quiet moments can be hard to come by. That’s why, during Edmonton’s beautiful spring and summer months, we cherish the opportunity to unwind in our backyards. Despite the warmer weather, many of us still feel exposed to close neighbours (no matter how great your neighbours are). With the right selection of trees, shrubs, and perennials, you can transform your backyard into a cosy, low-maintenance, outdoor space.

Using Your Summer Herbs

It’s that time of year when you look at your lovely herb pots that are filling up with their scented foliage and you wonder, what should I do with it all? From strongly flavored basil pesto, to milder mint leaves in a lettuce salad, dill sprinkled on a baked potato, or cilantro with fish tacos, the choices are endless. One of my favorite ways to use up a large amount of fresh herbs is in a green goddess dressing. Even though recipes for this dressing have been around for quite a few years, it seems to be making a comeback and everyone seems to have their own little twist to the recipe. Through combining your herb garden’s bounty with your preferred taste, a recipe is born.

Choosing the Right Hanging Basket For Your Outdoor Space

“Look up…waaaaay up!” is a refrain familiar to a certain generation, but it is what we see so many of our customers do as they walk into the store. The Friendly Giant may not be around to help the vertically challenged get those heavy baskets down, however the Wallish staff excel at it.

New Trees & Shrubs for 2024

Take a peak at some of our New Trees and Shrubs for the 2024 season. 

New Annuals for 2024

Click to view the new annuals of 2024

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Choosing Shrubs for Your Landscape

Selecting the perfect shrub can be exhilarating for some... and daunting for others. There are so many choices, from the beautiful blooms of a hydrangea to the blue hue of a juniper or the sweet smelling flowers of a Korean lilac. With literally hundreds of shrubs to choose from, how do you make the best decision for your garden? Here are some suggestions to narrow it down. Start with the physical properties of the planting site; how much sun it gets, how wet or dry it tends to be, and if the environment tends to have rabbit visitors.

New Perennials for 2024

Click the link below to view some of our new perennials for 2024. 

CLICK TO VIEW

Preparing Your Garden for Winter

It’s the end of September and we still have not had frost. I have harvested the bulk of the vegetables but have left some tomato plants standing in my urban home garden just to see how long they will continue to produce. Despite the shorter days and cooler nights, the strawberries are still ripening, and the plants continue to flower.

Freezing and Drying Late Season Garden Bounty

Tis the season of ‘do I or don’t I’ cover the tomatoes. The first forecasted temperature near zero came a few nights ago, but I had already decided that I was not quite ready to dig in the garden shed to find my supply of old sheets. After a brisk walk with the dog in the cold evening air, I erred on the side of caution and covered them up. Needlessly, as it turned out, but the sheets are now at the ready for when the frost does come.

Drought Tolerant Perennials

As weather patterns change, it may be worth considering how you can adapt your garden to survive hotter and drier spells without having to water frequently. A good way to begin is by building healthy soil that retains moisture and layering mulch on the surface to keep that precious moisture from evaporating. The next step is to select plants adapted to withstand long, dry periods.

Insect of the Week: Aphids

Aphids are one of the most common garden pests around, but they are by no means the worst. An infestation is generally controllable if caught early. They cause damage by sucking the sap out of tender leaves and stalks but rarely kill a plant unless it is already unhealthy or stressed.

Thrips

This may turn out to be a challenging year for gardeners. The heat in May was great for getting vegetable gardens and containers started early, but the dry conditions that have come along with the prolonged heat are providing the perfect conditions for certain insects to proliferate.

Purchasing Plants: An Exercise in Decision-Making

Every customer who walks through the doors at Wallish is unique in their needs and wants for plants that will thrive in their gardens, containers, and on their balconies. For some it is a simple process – select the plants that have always done well in a particular spot and that’s that. For others, it is a much more complicated process. For new gardeners, it is often a learning experience that can be both exciting and overwhelming.

3 'P's – Petunias, Pelargoniums, and Potatoes: answers to some frequently asked questions

Wallish staff answer a lot of questions from our wonderful customers every day, but there are just some questions that keep coming up more often than others. So, here is some information that may help you select your plants with greater confidence.

Perennials for Early Spring Colour

Many early blooming perennials are currently flowering in the greenhouse so it is an excellent time to see what they will look like in your garden next spring. They can be planted now but need a few days of hardening off to acclimate their tender leaves to the sun’s rays.

I Need Colour!

Our growing season is so short that we all want to jump in and get colour into our gardens as soon as we can. April has been chillier than normal this year, so greening up is taking its time.  The urban landscape is still mostly shades of brown but there are tiny pops of green and bits of colour showing up here and there. I am glad to see the green tips of the daffodils and scilla bulbs peeking through the mulch around my lilacs, and on inspection of my very sheltered front flowerbed, I find last year’s violas have overwintered and are looking fresh, green, and ready to grow. Pansies and violas are the perfect early annual as they can handle both the chill of early spring and the unexpected snow that May often throws at us. 

Spring is Springing Along!

Protect Pollinators by Resisting the Urge to Clean Up Garden Beds

RESIST the urge to get out there and clean up the plant debris! It’s a very hard ask for some gardeners, but waiting until the days are reliably above 10 degrees (say, five in a row) to clean up your garden beds is incredibly important for the hard-working pollinators that literally help your garden grow.

New Perennials of 2023

View Our New Perennials for Spring 2023

New Annuals of 2023

View our new annuals for 2023

Ground Cover Plants For Sun

Ground-hugging plants can be shrubs, grasses, or perennials. Smothering weeds with their leafy stems, they help fill “sunny” difficult areas such as a steep, sloping bank or a rocky area, and next to sun-baked patios and decks. Species adapted to long periods without rain, such as alpines and succulents, are often tough in other ways. Many can withstand harmful insects and don’t require regular feeding or pruning.

Ground Cover Plants For Shade

Ground-cover plants are all-around problem solvers. They are vigorous, low-growing plants that can be used as living mulch, suppressing weeds by absorbing water and nutrients, blocking out light, and forming a physical barrier.  They even provide habitat for pollinators like bees and butterflies.

Acclimating Your Plants to the Outdoors: "Hardening Off" Explained

It’s pretty hard to beat a juicy summer tomato or sweet strawberry from your own garden and the benefits of homegrown vegetables and fruits are countless. More and more people are considering quality and taste, organic options, continuous harvest, room to grow and how much time they have available and they are ready to take the plunge and sow their own. Hardening off seedlings is the most important concept that new gardeners will learn to improve successful transplants. Those young, pampered seedlings that were grown either indoors or in a greenhouse will need an adjustment period to acclimate to outdoor conditions before being planted in the garden.

Garage Syndrome is Very Real

Many of us have been there. Had a week of warm weather at the beginning of May, and couldn’t resist “just looking” at the greenhouse, and returned home with some plants tucked under your arm. Now what? You put them in the garage until it was warm enough to plant. When you planted them in the soil, you noticed they didn’t look the same as they did in the greenhouse, but they still seemed all right. Then you waited for them to bloom. Three weeks to a month later and finally a flower appeared. Then your plants started to return to normal and bloom like they were supposed to. What happened?

Gladiolus - A Must-Have For Your Vintage Garden

Always stunning, the Gladiolus combines old-fashioned and nostalgic feelings with easy to grow requirements making them perfect for flower beds as well as containers. With very little effort, they will burst into bloom and add sensational summer color to the garden. They can be overwintered by digging them up in the fall, storing, and replanting the following spring.

How To Grow Vigorous, Healthy Plants – Improve Your Soil

I had a Great Aunt who said she could test her soil by tasting it. I haven’t tried that, nor do I plan to, so I can’t tell you if it works or not. I do know that our home vegetable garden improved dramatically when we used a do-it-yourself soil kit and learned our soil’s pH, nitrogen, phosphorus, and potassium levels.

How To Grow Food With Less Work

When we first planted our vegetable garden in rows, our first spring in our acreage home, it never occurred to us to plant more than one kind of vegetable in any row. I’d never seen it done any differently, nor even heard it spoken about. But after a few years of gardening, and a whole lot of attention given to the soil, the sun, the moisture, and the bugs, I’ve become very interested in the practices of companion planting, intercropping, and succession planting. Any technique that improves the taste and yield of our vegetables, while reducing the amount of work I have to do to produce those vegetables, is worthy of my attention and my evaluation.  

"Cutting Back" Perennials

Long-time gardeners sometimes forget that new gardeners might not yet know the nuances of some phrases. There are still some of my grandmother’s gardening phrases floating around in my head that I have yet to decipher, however the last few years in my own garden have provided me with several “aha moments”. Imagine my disappointment learning what “bolt” (describing a plant that has gone to seed prematurely) actually meant.

Dividing Your Daylilies

Once daylily clumps become too large and  flowering decreases, you will want to divide your dalillies. Diving your daylilies rejuvenates them. Check the center of your daylily plant to see if there is any dead growth. If there is, your plant is telling you it’s time to divide it. The best time to divide daylilies is shortly after they have finished flowering in late summer to early fall.  You can expect to divide daylilies every 3 or 5 years in order to keep them healthy and blooming strong.

Blossom End Rot

Blossom End Rot is a common challenge for many gardeners and one I’ve heard many frustrations about over the years. Those frustrations tend to come around this time of year, with the first tomatoes of the season when they are approximately half of their full size.

Common Gardening Challenges and Solutions

Even the most careful and experienced gardener will occasionally find plants that are weakening or a crop teeming with a troublesome pest. No garden is immune to pests and diseases, and learning to recognize the symptoms and determine appropriate controls is your best defense.

If you are struggling with any of these challenges, don't let it discourage you from trying again. You are not alone in this, we are all gardeners and we are all learning all the time. These are some of the most common challenges that all of us face:

What Plants Need

Last year at the end of summer, we picked our first ear of corn that we grew ourselves! Unfortunately, that ear of corn was at most 4 inches long. Failure is part of the deal when gardening, and garden failures happen to even the most experienced of gardeners and beginners alike. You will have resounding successes with some plants, and experience colossal failures with others. Try to remember that gardening is about learning and experimenting as part of the experience. Every failure teaches you how to be successful next time.

Something that really clicked for me, was remembering how my grandmother called her plants her “babies”. At the time, I thought it quite strange, but now, many years later, it’s as if a light bulb went on in my head. I have a new understanding of “hardening off” and a new perspective about a plant’s needs.

How to Deal with a Hollyhock Rust Infection

Have you ever looked at your Hollyhocks only to find unsightly spots and lacey or dying leaves and asked yourself, “what is wrong with my Hollyhocks?” These different kinds of deterioration are likely the handiwork of Hollyhock Rust.

3+ Easy Ways To Get Rid of Scarlet Lily Beetles

Scarlet lily beetles (lilioceris lilii) – also known as red lily beetles or simply lily beetles – are pesky little offenders that can wreak some serious havoc on your garden. Today, we’re explaining the life cycle of lily beetles as well as our foolproof way to get rid of lily beetles naturally. 

How To Plan A Garden: An Easy 4-Step Guide

Have you ever set out to do anything without having a strategy?  And how did that work for you?  Just how many trips did you take back to the store to get supplies?

Strategizing for anything you’d like to accomplish is always a good idea.  In this blog we will talk about why planning a garden is a good idea and talk about steps in planning a garden.

Bringing Dahlia Tubers Back to Life

Dahlias, in their amazing array of colours and styles, bring sparkle and drama to a garden space.  Dahlias are the flowers that your neighbours will stop and ask about.  The dahlia family offers a multitude of choices in colour, height, and flower type to compliment your garden the best.

How We Use Supplemental LED Grow Lights

For plants, light is life.  Light is the crucial element for their growth – if we didn’t have light, we wouldn’t have plants. In the north where we live, adequate lighting from natural sources for growing plants can be hard to come by.

In this blog we will talk about photosynthesis, why supplemental lighting for plants is necessary and new trends in LED lighting for horticulture.

How To Easily Overwinter Dahlias Indoors [Canada]

Wondering how to overwinter your treasured dahlia flowers?  Today, we’re sharing two simple methods for overwintering your dahlia tubers indoors during Canada’s cold winter – both for those grown in pots and those grown in the ground.

Unwinding Fertilizer Numbers

Fertilizer can be confusing.  The sheer quantity of brands and mathematical combinations can be dizzying. Let’s spend some time unwinding fertilizer and hopefully, the numbers will begin to make sense.

How To Care For Hanging Baskets

Hanging Basket Care can be overwhelming!  We want to show you that caring for your hanging baskets is simple and easy. We will cover a quick system for tending to your hanging baskets using the acronym CARE.

What Growing Zone is Edmonton?

Explore the history of horticultural zones, what horticultural zone Alberta is, what growing zone Edmonton is, how horticultural zones benefit the home gardener, and some hardy perennials for Edmonton’s horticultural zone with us in this blog.

3 Main Reasons Why Perennials Die Over the Winter

It’s frustrating. Perennials die over the winter and they’re really not supposed to, right?

How To Grow Tomatoes in Alberta

Tomatoes are probably the strongest draw for the non-gardener to venture into trying to grow something because there really is nothing like a fresh tomato.  Tomatoes are originally native to the tropics, producing smaller berry-like fruit than we know today. Here are a few tips on the environment of their choice and care.

Garden Maintenance: Why Deadhead?

When flowers bloom, a complex series of events start to perpetuate their species.  We gardeners get to enjoy the beautiful color displays and heady scents, which flowers use to attract pollinators. And what a joy it is to appreciate the blossoms!

The Ultimate Guide To Pruning Raspberries [Alberta]

As the growing season winds down, that prickly patch of raspberries is screaming for attention. To be able to prune raspberries correctly, understanding their life cycle makes the task so much more bearable. Here are a few tips on raspberry pruning.