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By Dave Zeldon and Ely Schweyer

Got cabin fever? Perhaps you’re going a little stir crazy looking out the window and seeing the drab, limited pallete in your seemingly lifeless outdoor space. It’s important to embrace this time of year as the composting and cleansing part of Earth’s cycle before spring’s renewal – but that doesn’t mean we should be trapped inside forever. Here’s a winter/early spring list of activities, divided by indoor (Part 1) and outdoor (Part 2), for the gardener and yard keeper.

☝️ First, let’s quickly note the important activity happening under the snow – and how your actions now will affect the summer garden!

What's Going on Outside When We Aren't Paying Attention?

Before heading out to attend to these jobs have a look at the ground beneath you.

   If it is frozen hard you are good to go but avoid treading on the crowns of perennials.

   If it has been warm and sunny and the soil is warm and dry, consider laying down a few planks to walk on.

   If the soil is soggy then postpone those tasks until it has dried. What we are trying to protect is not your shoes but the soil itself.

   Ideally, soil is comprised of 50% solid materials such as minerals and organic matter in various stages of decomposition, and 50% open air space. Water from rain or melting snow enters the soil, displacing the air. Wet soil is easier to squish down and that process is called compaction.

   While walking on wet soil would not seem to have much effect, it occurs within the depth where annuals, perennials and lawn grasses have their roots. Compaction makes it harder for roots to grow through the soil. Roots can grow stronger to push aside the soil particles, but tougher roots are less effective at drawing in nutrients and moisture. Removing air spaces makes it more difficult for water to percolate down so compacted soils remain wetter. Plants don’t grow as well and are more prone to insect damage.

   The freeze/thaw cycles of fall, spring, and winter heave the soil relieving compaction and aerating the soil; a good way to start the growing season. Preventing further damage to the soil is relatively simple. Stay off it when it’s wet. Later, consider using pavers or pathways in heavily travelled areas of the lawn. Aerate the lawn with a machine that removes small plugs of soil and redistributes them over the surface. In beds and borders, add compost and use a thick mulch layer to absorb some of the pressure.

 And stay off it when it’s wet.

With this in mind, we can appreciate Earth’s renewal capabilities, as well as prevent destroying our yards and gardens!

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Part 1: Activities for When it’s too Cold and the Soil isn’t Ready Yet

Yup, it’s bleak out there. It’s time we make that herbal tea and turn our attention to creating a lively, green indoor environment, even if just to get us through the winter. Here’s a to-do list for trapped gardeners and plant enthusiasts to make the most of our wintry sentence.

Indoors: Get Inspired!

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Indoors: Thinking Ahead!

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Indoors: New Beginnings!

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Part 2: When the Soil IS Ready!

Suit up!

Outdoors: Don’t Fall Behind!

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Outdoors: Get Inspired!

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Outdoors: Thinking Ahead!

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Outdoors: Start Something New!

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We hope these suggestions help you stay green this spring and winter! For more gardening activities, see our other blogs here. We hope to see you this spring (March 5th, 2026) at Eising Greenhouses and Garden Centre! 🌱❄️

If you’re looking for blooms that come back each Spring with a burst of colour, here are ten of our favourite flowering perennials and ground covers.

Plant These for a Spring Show!

Height: 30-120 cm, Spread: 45-90 cm

Flower Colour: white, pink, red, purple

Blooms: spring, summer

Growing: While Bleeding Hearts will tolerate full sun or full shade, they prefer the protection of light shade. This perennial is fairly drought tolerant, but it will thrive in evenly moist soil, and blooms will last much longer if the soil is moist.

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Dicentra

Height: 30-45 cm, Spread: 30-45 cm

Flower Colour: white, green, pink, purple, yellow

Blooms: late winter to mid-spring

Growing: Moist, humus-rich, well-drained soil in lightly dappled shade is where hellebores do best.

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Helleborus

Height: 15-60 cm, Spread: 15-45 cm

Flower Colour: blue, red, orange, white, pink, purple, yellow

Blooms: spring, early summer

Growing: Full sun or partial shade and moist, well-drained, humus-rich soil.

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Primula

Height: 8-150 cm, Spread: 15-60 cm

Flower Colour: white, yellow, pink, blue

Blooms: spring, summer or fall

Growing: Anemone does best in moist soil and partial or light shade, but they will tolerate full sun. While Anemone can take a while to become established, they’re worth the wait!

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Anemone

Height: 45-90 cm, Spread: 30-60 cm

Flower Colour: white, red, yellow, pink, blue, purple (The colour of the spurs is often different than the petals)

Blooms: spring, summer

Growing: Columbines love full sun or part shade and moist, well-drained soil. This plant will self-seed and seedlings can be transplanted.

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Aquilegia canadensis

Height: 30-60 cm, Spread: forms groupings

Flower Colour: blue, pink, purple

Blooms: spring

Growing: Plant in partial to full shade with humus-rich, moist, well-drained soil. This woodland plant has blooms that are attractive to Hummingbirds and pollinators. Foliage dies back right after it blooms.

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Mertensia virginica

Height: 10-15 cm, Spread: 60 cm

Flower Colour: white, red, lavender, pink, bluish purple 

Blooms: early spring

Growing: Plant in sun to partial shade with humus-rich, moist, well-drained soil. Spreads horizontally as it grows and creates new roots where the stems touch the ground. Do not prune in the fall as Spring’s flowers will already be forming on these plants.

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Phlox subulata

Height: 20-60 cm, Spread: 20-90 cm

Flower Colour: white, red, pink, blue

Blooms: spring

Growing: To avoid root rot, grow Lungwort in moist, humus-rich soil that’s well drained. They prefer partial shade to full shade.

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Pulmonaria

Height: 10-30 cm, Spread: 20-30 cm

Flower Colour: white, red, purple, blue

Blooms: early to mid-spring

Growing: Very well drained soil is important for Pasque Flower, which does not like to sit in wet soil. It will grow well in full sun or partial shade.  

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Pulsatilla

Height: 60-80 cm, Spread: 60-80 cm

Flower Colour: yellow, pink, red, purple, and shades of white

Blooms: spring, early summer

Growing: Humus-rich, moist and well-drained soil in full sun or partial shade is where peonies do best. Adding lots of compost and planting at the proper depth is very important for peonies to bloom. Be sure to plant potted peonies at the same level as the soil around them, not higher.

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Paeonia

It’s the question we probably hear the most when it comes to flower gardens…”What can I buy that will flower all season long?” While some annuals bloom for a very long time, no plant will bloom from early Spring to late Fall, and no vegetable plant will produce for that duration either. The solution? Succession Planting! It’s a simple strategy that maximizes the time your garden is blooming or producing vegetables.

What is Succession Planting?

Plant early (earlier than you think) and plant things in succession that thrive in the current weather conditions - right up until there is a hard frost. Simply plan to plant another crop or flower once one is harvested or finished blooming. Many gardeners here in southern Ontario wait until the May 24th weekend to plant everything - all at once. Succession gardening staggers planting times so there is a continuous harvest of vegetables or an everchanging series of blooming flowers. While it takes a little more planning, the results are worth it.


A Succession of Blooms

The best way to ensure a parade of colour in your garden is to choose a variety of annuals, perennials, and biennials that bloom at different times. There is a notion that a garden can only have annual flowers or just perennials, but the best results come from a mix of both. You’re allowed to mix them together! Most annuals bloom during the heat of the summer, but perennial flowers can extend the season for you by blooming in early spring or in the fall. A list of perennial bloom times can be found in this Landscape Ontario article to help you choose your plants.

Some flowering plants, like pansies, love cooler weather and are easy to purchase in the spring. A little planning and planting in the fall will provide a flush of colour from Spring bulbs like Daffodils, Crocus, and Hyacinth. Spring bulbs look great alongside early-blooming shrubs or trees like Canada Serviceberry and Forsythia. 

April or early May is also an excellent time to directly sow annual flowers like sunflowers, nasturtium, borage, and herbs like cilantro and dill to give them a head start.

Cool Weather Veggies

It’s surprising how many vegetables thrive in cool weather and withstand light frost. Keep tender plants indoors until the third week of April and slowly harden them off, but get outdoors any time in April and begin directly sowing fast-growing cool crops like leafy greens, root vegetables, and some herbs. 

Lettuce planted in late spring will tend to “bolt” and taste bitter once hotter temperatures arrive. Lettuce loves cooler conditions. So you don’t have to wait until May 24th to sow lettuce and other vegetables. Which Vegetables? We have a list of examples for you in our article: Starting Seeds Indoors and Cold Weather Crops. Starting early means you can harvest a whole crop of vegetables before you plant heat-loving crops like peppers and tomatoes.

Sow All Season

If you’ve ever been overwhelmed by planting too much of one crop at once, you will love succession gardening. While you may be able to freeze a batch of 2,000 string beans from the entire packet of seeds you planted in one go, sometimes stretching out the harvest is nice. Plant smaller batches of beans, peas, and herbs like cilantro, dill, and basil every three weeks to ensure continuous summer harvests. This approach is also known as interval gardening. 

Sow cool-weather crops like leaf lettuce, Swiss Chard, and Radishes in April or early May and again in September.

Continuous Harvest

Once your early Spring vegetables like lettuce, peas and radishes have been harvested, it’s time to sow your second crop of cool-weather veggies for harvesting in the Fall. Do you know veggies like parsnips, Brussels sprouts, peas, and kale have more flavour after a mild frost?! A mild winter this year meant we were still harvesting some Brussels sprouts in December.

Double Up

Another tip is to plant things that grow well together. For example, plant seeds for a root crop like carrots below your tomato plants, peas or bush beans in the vegetable garden. The carrot crop will be next after the tomatoes, peas or beans are done for the season. There are many combinations like this - tomatoes and basil, kale and dill, lettuce and beets, broccoli and borage, just to name a few. Doing this helps to increase the production of your plot of land and keeps the soil covered, which is always better for soil health.

One final strategy for flower succession planting is to use containers. Consider placing a well-positioned pot of annual blooms beside perennial plants resting after flowering. 

Once you get started, researching companion plant combinations like these can be a fun game. These combinations will extend the time you can enjoy lots of colourful blooms and increase the amount of vegetables a garden can produce! 

Come along on a little journey with me and imagine this… It’s Springtime. The sun shines, and the air finally feels warmer after a long, grey winter. You take a little trip to your favourite garden centre and find that special plant you’ve been reading about and hoping for. Of course, you buy the plant, take it home, and proudly place it on your sunny patio on this beautiful day. Two more sunny days go by, and the plant does not look good at all. It seems to be dying, so you give it lots of water, but that makes no difference. It is in fact dying. So disappointing! How could this be happening?

In our excitement to get outdoors and plant flowers, or add greenery, we forget that the plants we’ve been growing indoors or inside a greenhouse, aren’t used to the elements in the great outdoors. They’ve been sheltered indoors, out of the wind and direct sun, and watered and fertilized regularly with the utmost attention. They’ve been pampered in a plant spa and are quite literally hothouse flowers! Being plunked outside afterwards is the equivalent of us going outside in a bathing suit with no sunblock on for the first sunny, warm days of Spring, exposing our lily-white skin that’s been covered up by a parka all winter long!

Red, sunburned skin is not a great image, but hopefully, this comparison helps to explain the importance of transitioning or hardening off plants. Much like us, indoor plants need to be gradually exposed to the elements and given protection in the process.

The same will be true if you have planted seeds indoors or purchased greenhouse-grown seedlings. Seedlings grown in a greenhouse, a sunny window, or under grow lights in your home need up to 14 days to acclimate to being moved from their cozy indoor space to the great outdoors.

What is Hardening Off?

Hardening off ensures that you will not lose another plant or seedling! It’s a sensible process for all the plants you’re moving from indoors to outdoors. By helping plants or seedlings to gradually toughen to withstand the elements, you prevent transplant shock, which can cause your plants to be stunted or, worse, die.

To ensure success, the process of hardening off takes up to 14 days, so you will want to begin two weeks before transplanting plants and seedlings into your garden. Houseplants may only need 7 to 10 days, but tender, tiny seedlings need the full two weeks to strengthen and get used to their new environments.

When to Harden Off

Cold-weather plants like lettuce, kale, pansies, violas, dianthus, and potted or forced spring bulbs can be hardened off once daytime temperatures consistently reach 5 Celsius, usually in April in southern Ontario.

Perennial plants, tropical houseplants, and heat-loving seedlings like most annual flowers, tomatoes, peppers, and basil should wait until temperatures are around 7-10 Celsius to begin hardening off. For vegetables and annual flowers, start hardening off around May 10 here in Norfolk County if your target is planting seedlings around May 24th.

Successfully Hardening Off Your Seedlings and Plants

Days 1 and 2

Begin on a day that is optimally warm (At least 5 Celsius for cold-weather-tolerant plants, 7 Celsius for heat-loving plants, or 15 Celsius for tropical houseplants) and place your plants or seedlings outside in full shade and protected from the wind.

If you don't have a wind-sheltered area in the shade, putting your plants in an open cardboard box is a good way to protect them from the wind at this stage.

Leave them in this protected area for 1-2 hours before returning them indoors.

Days 3 to 5

Each day, gradually increase the length of time your plants are outside and begin to place them in an area where they will get dappled shade and some wind.

Pay close attention to watering while you’re hardening off your plants as they will require more frequent watering.

Days 6 to 10

On day 6, start to increase your plant’s exposure to direct sunlight by placing them in the morning sun, which is less intense than the afternoon sun.

Begin to leave them outside overnight from this point on unless the temperature is expected to drop below 7 Celcius.

Days 10 to 14

After 10 days of acclimation, it is safe to move houseplants that require more sun to a location that meets their needs.

After 14 days of acclimation, it’s safe to transplant seedlings to their place in the garden or to large pots if you’re growing in containers.

As soon as your plants are transplanted, be sure to water them well! This will help them transition and eliminate air pockets in the soil that can harm the roots.

If the temperature drops and a fluke, unexpected freeze is forecasted after you’ve planted everything, cover your plants with row cover, cloches (you can use plastic water jugs with the bottom cut out, just leave the screw cap off to act as a vent), or cardboard boxes to protect them.

To summarize, when Spring arrives, protect your skin with sunblock, and harden off your plants before you move them outdoors!

By now, if you've been caring diligently for your seedlings, they're likely bursting out of your starter trays or pots! You've watched them grow up, and now it's time for them to graduate into the garden. But you may be wondering how to take the next steps. How do I transplant, and when? Answering these questions is key to success at this pivotal moment. 

Transplanting Overview 

Transplant timing hinges upon our last frost date, which is May 19 in Simcoe. Frost-hardy veggies can be transplanted before then, but tender plants should wait a little longer. Sometimes seedlings can outgrow their trays before their graduation time. Don't worry, that means they're growing well! The solution is simply to move them into a bigger pot.   

How to Repot

Your young ones are ready for a larger home when their roots have filled their containers and their leaves are crowding out their neighbours. The new pot should be twice as large as the old one. 

Begin by watering the seedlings. The damp soil will adhere to the roots and keep them from drying out. Don't tug on the stems. Instead, use a butter knife to carefully lift them from the container or squeeze them out from the base. If a few are intertwined, gently tease them apart. With a pencil or your finger, dig a hole into their new pot or plug tray. Place the seedling, firm the soil around it, and water them all once you finish. The roomier pot will give them a chance to stretch their legs before their big move.  

  

When to Transplant into the Garden

Historic weather averages tell us when to take the next step. Often, we need to adapt to unusual weather or unique conditions each year, but here is a general guide for our climate.  

April 15 - 25
Frost hardy: asparagus, broccoli, Brussels sprouts, cabbage, lettuce, onions, radishes, peas, spinach, parsnips, early potatoes.

April 25 - May 10
Semi-frost hardy: beets, carrots, cauliflower, celery, late potatoes, early sweet corn.  

May 15 - 25
Semi-frost tender: snap beans, sweet corn, tomatoes. 

May 25 - June 5
Frost tender: cucumbers, eggplant, melons, peppers, pumpkins, squash. 

Hardening Off 

You can gradually expose seedlings to the outdoors in the week ahead of their move. While not absolutely necessary, your veggies, especially the tender crops like tomatoes, will be strengthened by the gradual transition. 

Begin by setting them in a shady spot away from the wind for a few hours each day. Slowly increase their exposure to sunlight and breeze until they spend a whole day and night outside. Make sure to keep them well-watered, as their small pots can quickly desiccate. When the time comes to graduate, they'll be ready to brave the elements. 

How to Transplant into the Garden

Follow these steps for transplanting success:

  1. First, make sure you've loosened and enriched the soil with compost or another organic fertilizer. 
  2. Choose a warm overcast day and plant in the morning or evening. 
  3. Water the seedlings to hydrate their roots. 
  4. Determine the correct garden spacing in advance. 
  5. Gently squeeze the tray around each plug to remove them. Only remove each seedling just before moving to minimize the roots' exposure to air.
  6. Using a trowel or your fingers, make a hole and drop the seedling into it, firming up the soil around it as you plant. Leggier seedlings can be planted a little deeper as long as you don't bury the first leaves. 
  7. Water the newly planted area immediately after finishing.   
  8. They will likely need to be watered daily for a few weeks afterwards. Check the soil moisture and water as needed to prevent them from drying out.  

 

There are a few more tricks for particular plants like tomatoes and cucumbers. But in general, these are the basics for transitioning your veggies into the ground. If you haven't started your seedlings, check out our selection of starter plants in our online catalogue. If you need more advice, our garden centre would be happy to share more tips for success!

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