![]() ![]() This consistency allows for more accurate spacing with mechanical seeders and more even germination. SIZED SEEDS: "Sized" seeds have been sorted so they are roughly the same size. Protecting with row covers can extend the harvest period. Late-summer sown or planted collards can be wintered in cold frames or hoophouses, or in the open in mild regions, to extend the season. Kale is very hardy, and the eating quality will improve into the late fall with light frost. HARVEST: Beginning about 2 months after planting, harvest by clipping individual leaves. Control cabbage worms and loopers with Bacillus thuringiensis (Bt). Apply row covers at the time of planting to exclude pests from the crop. INSECT PESTS: Kale is not as afflicted with pests as are other brassica crops such as cabbage. campestris) and black leg (Phoma lingam). Johnny's Selected Seeds only sells seed lots of kale that have tested negative for black rot (Xanthomonas campestris pv. DISEASES: Adhere strictly to a preventive program including: (1) long crop rotations with non-brassica crops, (2) clean starting mixes and outdoor seedbeds, and (3) strict sanitation practices. Transplants can be set out from September to February in these regions. WINTER CROP: Successful kale crops can be grown where winters are mild and temperatures rarely fall below 32☏ (0☌). To ensure mature heads, seed the crop early in areas where heavy freezes occur early in fall. FALL CROP: Start seedlings as above in May and transplant to the garden in June–July. Kale prefers cooler growing temperatures, between 55–75☏ (13–24☌), optimum being 60–70☏ (16–21☌), but will produce good crops under warmer, summer conditions. Transplant outdoors 12–18" apart in rows 18–36" apart. If possible, keep soil temperature over 75☏ (24☌) until germination, then reduce air temperature to about 60☏ (16☌). Seedlings should be ready to transplant in 4–6 weeks. in 20-row flats or, in outdoor beds ¼" deep. Sow 2 seeds per cell in 50- to 72-cell plug flats, 3–4 seeds/in. EARLY SPRING CROP: Use varieties suited to warm-season production. ![]() ![]() For bunching: Sow 3–4 seeds every 12–18", ½" deep, in rows 18–36" apart. ![]() DIRECT SEEDING: Plant from early spring to approximately 3 months before expected fall frost. DAYS TO MATURITY: From direct seeding subtract about 14 days for days to maturity from transplant. For baby-leaf production, see the Baby Leaf Brassica Greens culture. Consistent moisture will produce the highest-quality leaves. Related Articles.SCIENTIFIC NAME: Brassica oleracea CULTURE: Kale prefers a fertile, well-drained soil high in organic matter with a pH range of 6.0–7.5. Artichokes can be a challenge for beginner gardeners because of their climate requirements and a certain pest. What is the most difficult vegetables to grow? Hop shoots, the world’s most expensive vegetable, is being grown by a farmer in Bihar. You may have noticed the price of lettuce has risen considerably in the past two years. Top 6 Most Cost-effective Vegetables to Grow Bed sheets or comforters work best for covering large plants and shrubs. See also Should I Boil Kale Before Smoothie? Will bed sheets protect plants from frost?įabric coverings will prevent the freezing air from coming into direct contact with the moisture on the plant while also capturing the heat that is radiating from the ground. ![]()
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