They are definitely perennial where I live in Zone 8 and through Zone 10, and maybe will overwinter in sheltered areas in USDA Zone 7, depending on the conditions. Keep in mind that while USDA growing zones and last frost dates provide helpful information for gardeners, they are merely guidelines. In zones 9 and 10 they can be planted throughout fall and winter. Are you in the Atlanta, Ga. growing zone? Collard greens (Brassica oleracea var. The young leaves can be harvested as the plant grows for salads, soups and other recipes. Plant … Planting 2 to 4 unrooted nodes beneath the soil will increase the tall plant’s stability later. Fertilize azaleas and camellias immediately after they bloom. When to Plant Seeds in Zone 7 The last frost date for zone 7 is usually around mid-April. Planting Collards Growing Zones. Plant perennials, such as asters, mums and ornamental grasses for fall color. Collard greens planting may also be done in early spring for a summer harvest, but adequate moisture is necessary for collards greens growing successfully in summer heat. Zone 8 gardeners should follow much the same schedule as described above for zone 7, but can plant two to three weeks earlier in the spring and two to three weeks later in the fall. Tree collards are an odd plant that never goes to seed, so it is grown exclusively from rooted cuttings. A soil pH of 6.5 to 7.5 is best. The ideal growing environment 3, 4, 5 for collard greens is in moist, compost-rich soil that is well drained. 4). This allows the plant … Feed other flowering shrubs, if not previously done, with Holly-tone ®. garden. Because Collards do not form heads, it is easier to grow than cabbage. In colder zones, if you have established plants, you can try taking cuttings as winter begins and rooting them indoors for planting outside the following spring. For maximum results, add aged compost to your garden bed or containers prior to planting. As the plants are pulled out for more growing room, eat the foliage. Time your planting: Start heat-loving greens in late spring so they mature during summer’s heat. In mild climates, including U.S. Department of Agriculture hardiness zones 9 and 10, fall provides the optimum time for planting. This allows the plant … To stake tree collards: In hotter locales, plant them in part-shade, and give them plenty of water. A sliver of Zone 7 runs also west, but it is very narrow. I have a cousin who's joining Dave's and trying to get a good planting schedule down for her spring? Sometimes it’s difficult to find that perfect window of opportunity, but the key is to consider weather in your specific area and the particular needs of each plant.