Garden Tips by Month Cold + Bold Canada™ - Sharon Murphy
Wondering what you could be doing in your cold-climate garden to help it thrive? Check here for seasonal tips and guidance from Canadian gardening expert Sharon Murphy, tailored for northern growing zones.
January February March April May June July August September October November December
North Region Tips: January
North Region Garden Tips: February
North Region Tips: March
- Premature snow loss on perennial flower beds is always a concern in colder regions of Canada, so keep those beds topped up with snow or mulch, and watch for drying soil once the snow has melted.
- Late winter and early spring offer a window of time to prune trees and shrubs before they have leafed out. Be sure to research correct pruning times and techniques for your specific trees and shrubs.
- Avoid digging into perennial roots as the weather warms, which can cause irreparable damage. Let perennials awaken at their own pace.
- March is a good time to give plants a head start by getting seeds sown or planting spring bulbs, corms, and tubers.
North Region Tips: May
North Region Tips: June
North Region Tips: July
Unless you're embarking on building a new garden or doing a garden renovation, July is more of a maintenance month for established gardens.
- Check gardens daily for hydration status and keep gardens, hanging baskets, and container soil evenly moist. Mulch is a great help with moisture retention.
- Fertilize annuals regularly with weekly applications of water soluble fertilizer, particularly those growing in containers and hanging baskets.
- Deadhead annuals and perennials that aren't self-cleaning to keep annuals flowering and to strengthen perennial roots after they've blossomed. So grateful for Supertunias that don't need this!
Enjoy your garden, savour its beauty, and share it with a friend.
North Region Tips: August
Each gardening months has its own personality, and August can be marked with some fatigue.
Continue to take in the magical moments of your garden!
- Some people wind down regular weekly annual plant fertilizing, but I prefer to squeeze every drop out of the gardening season, and I continue to fertilize my annuals to the end of August.
Trees, shrubs, and perennials, however, should grow without fertilizer in August, allowing them to get their seasonal cues from shorter days and cooler nights to slow down growth and prepare for the upcoming winter.
Cut the overgrown flowers back and take out weeds to reduce water and nutrient competition to keep plants strong and healthy through to the closing weeks of summer.
Don't be afraid to call it quits on plants that have lost all hope to lessen your garden workload.
North Region Tips: September
Celebrate the beauty of this new season with potted fall mums!
Celebrate the beauty of this new season with potted fall mums! And they can be transplanted as a perennial for gardeners living in zones 6 or higher. Double check tags for hardiness before you plant so you have the right match for your growing space.\
Collect fall bulbs like Allium, Daffodils, Tulips, and Muscari, all hardy at zone 3 and above, for planting. Watch the weather and get them in the ground 6 weeks before the ground freezes up.
With the cooler weather lowering plant metabolic demands, Fall is a great time to edit the garden. Move & divide perennials, and plant new perennials, trees, and shrubs to fill in bare zones in the garden.
Fall garden clean up starts earlier in cool zones than warm zones. Deadhead flowering perennials to allow them to direct their nutrients to bulking up and strengthening their roots for the upcoming winter. Remember to keep the biennials (Delphiniums, Hollyhocks, Lupines) up to develop their seed pods, vernalize the seeds, and scatter them during the cold months.
North Region Tips: October
October gardening activities focus on preparing the garden for the upcoming winter.
This is still a good time to plant new perennials, trees, shrubs and to complete perennial garden edits dividing and moving flowering perennials.
Plant fall bulbs like Crocus, Daffodils, Hyacinths, Tulips, and Garlic (not a bulb) as the daytime highs lower to the mid-teens Celsius. As you plant, stop filling the hole with soil midway to water thoroughly, and water again when the planting hole is completely filled to ensure complete soil hydration.
Fall dehydration is a leading factor in perennial, tree, and shrub winter die-back, so check them regularly and water thoroughly when the soil is dry.
Perennial fall garden prep is ideally started after the first frost to take advantage of every drop of photosynthetic activity. Sculpt your winter garden, cut back any infected foliage, and add mulch if needed.
North Region Tips: November
November is a time when most prairie gardening activities have been completed, but milder areas of Canada still have some time to finish up fall gardening tasks.
- Fall bulb, perennial, tree and shrub plantings should be wrapped up for the prairies, but warmer areas still have some runway to complete planting in November. Aim to get everything in the ground by at least four to six weeks before the ground freezes.Protect perennial flower beds from frosty winter temperatures with the powerful insulating properties of additional layers of snow as you shovel sidewalks and driveways. Also, it’s toboggan time!
- Continue to irrigate perennial gardens, trees and shrubs in warmer zones. Evergreen plants, as well as anything planted this year, are particularly important to keep watered until the ground freezes.
- Winterize garden watering equipment: disconnect and bring sprinklers, drams, on/off valves indoors to keep them from freezing; drain and wrap hoses; overturn rain barrels so they don't collect water or snow; clean out and store bird baths; empty, clean and put away self-watering AquaPots. If you don't have frost-free spigot valves, turn off the indoor water valves, then open and drain outdoor spigot valves to release water that could potentially freeze and crack the hardware.
- Top up mulch on perennial flowerbeds, particularly in places where the snow tends to melt during the winter thaw such as south-facing flowerbeds next to buildings, fences, sidewalks or driveways.
North Region Tips: December
As the winter season settles in, embrace its rhythm of rest, recharge and renewal – a time I refer to as “wintering”. Here are a few wintering activities I’m doing this month.
- Fresh winter greens are homey, festive and fancy. Choose greens that are fragrant, have vibrant, dark green, flexible needles that stay on the branch as you pass your hand over them.
- Protect perennial flower beds from frosty winter temperatures with the powerful insulating properties of additional layers of snow as you shovel sidewalks and driveways. Also, it’s toboggan time!
- If you have bird feeders, keep them well-stocked during the harsh winter months when natural food sources could be scarce for our feathered friends.
- It's never too early to snuggle up to seed and plant catalogues with a warm beverage to start some preliminary dreaming (and ordering) for next year's garden.
ABOUT SHARON MURPHY
Sharon Wallish Murphy is a third-generation grower and experienced gardening educator based in Alberta, Canada. With deep roots in horticulture, she creates practical, approachable content designed to help gardeners succeed in cool-climate growing zones. Sharon is especially passionate about equipping gardeners of all skill levels with the confidence to grow, while also fostering a love of plants in the next generation through education and storytelling.




