Since 1950 we have been providing a wide range of perennials, annuals, bulbs, shrubs, vines, amaryllis, gardening tools & supplies, and gifts for gardeners. Lily of the Valley (Convallaria majalis)- Zone 2-9. In humid areas with poor soil drainage, plant lavender in containers. Your plant hardiness zone is an important piece of information to guide your garden decisions. In this plant guide, we've collected 10 perennials that will thrive in cold zone 3 gardens. White Flower Farm is a family-owned mail-order nursery located in northwestern Connecticut. Amur Maple . Can I plant a tree in a warmer (higher number) plant hardiness zone than listed on your website? 01 of 10. Here in Canada we have a wide range of garden zones with variations in each province. By choosing a hardy variety for your climate, perennial vegetables are often the first vegetables that come up. Interactive Gardening and Plant Hardiness Zone Map for Canada. They have adapted to withstand the freezing temperatures. One of the colder zones in the United States is Zone 3. This summer-bearing cultivar produces medium-sized, medium to dark red fruit with a sweet, delicious flavor. If you are planning to buy a shrub, perennial or tree, you need to make sure that this new plant will tolerate year-round conditions in your area. The range of minimum average temperatures for zone 3 is between -40°F and -30°F or -40°C and -34.4°C. Zone 3b-35°F to -30°F. Perennials are wonderful plants since most will bloom year after year. Plant lily of the valley in late fall in partial shade and a moist soil. 4. Canada Zone 3b - Temperate Short Cool Summer Extreme Minimum Temperate −37.2 to −34.4°C (−35 to −30°F) This region has a humid continental climate (Köppen climate classification Dfb) with long summers and very cold freezing, windy, winters. Zone 3 has average cold temperatures of 30°F to -40°F, although Zone 3 often has much colder temperatures than the average. Each zone is further divided into sub-zones such as 3a and 3b, with 3a being colder than 3b. If you live in this zone, be sure to consider one of these trees. Have a look at the map and find the number for your area for growing plants, trees, shrubs, and vines, including annuals and perennials. For many, these dainty bell flowers are the quintessential scent of spring. Plants in this area have to contend with harsh winters. Morden Blush (Shrub, 90 cm high x 90 cm wide) Zone 1a A popular cultivar since its release in Canada 1961, ‘Killarney’ is known for being extremely cold tolerant. Before you can even plant an annual garden, you can often already harvest some of these hardy perennials. Zone 2a-50°F to -45°F. You can safely plant any of the trees, shrubs, and berries we sell in a warmer (higher number) location as long as you stay in Canada. Berries will be ready to harvest in July the year following planting, about a week after fruit ripens on ‘Boyne’ plants. The spring bulb has a clean, sweet smell that is as delicate as its flowers. Using historical climate data from Canadian National Climate Data Archive, this interactive map created by Plantmaps covers Canada which ranges from Zone 1a to Zone 10b. Zone 2b-45°F to -40°F. It rarely gets sick and is reliably hardy, unprotected, to -15ºC, or to Zone 5. Custom programming and server maintenance by Reinvented Inc.. Connect With Us (Best months for growing Cauliflower in Canada - Zone 3b Temperate Warm Summer regions) S = Plant undercover in seed trays P = Sow seed Grow in seed trays, and plant out in 4-6 weeks. Perennials are plants that you plant once, and they come back year after year. Here are 10 perennial plant ideas for a zone 3 garden. Gardeners who live in areas colder than Zone 5 should mulch well and preferably plant it near a south-facing stone or brick wall for the reflected heat and shelter from north winds.