![]() In the beginning, keep the plant covered for a longer period of time and then gradually expose them to the external temperature and sunlight by uncovering them. This is because indoor plants are not used to the outdoor temperature and light conditions. Hardening off can be done using a mini greenhouse or in a plastic tunnel. Hardening off Cauliflowerīefore transplanting the seedlings outside in the garden soil, it is best to harden off the plant. Place the grow lights about 5 to 10 cm above the seedlings. Improper and not enough light will result in leggy seedlings. Provide at least 14 to 16 hours of light per day. They need a lot of light for healthy growth. When the seedlings appear, use growth lights directly over them. Seedlings should be transplanted 2 to 4 weeks before last spring’s frost and every plant should be 1.5 to 2 feet apart. The plant needs consistent water in both phases i.e. Seeds should be started 4 to 5 weeks before the last frost. This plant also needs rich nutrients so add 5-10-10 fertilizers. First of all, the soil should be organic-rich. Planting Cauliflower SeedsĪ few things are important to consider before planting cauliflower. ![]() Water the plant regularly and use nitrogen-rich fertilizers 3 to 4 weeks after transplanting. Any interruption or change in moisture, temperature or nutrition can result in premature head development. Other factors also affect the growth of cauliflower. Make sure to provide the proper heat and enough sunlight to avoid this problem. If they get much heat and less sunlight they can get leggy, which means they turn into long spindly plants. ![]() When you are growing the cauliflower indoors, provide the proper heat and enough sunlight to the seedlings. For fall crops, start in early or mid-summer. Look for the last frost in spring, and plant the seeds indoors about 6 to 10 weeks before the frost.Īfter 2 to 3 weeks, transplant the seedlings into the plastic tunnel. Transplant the plant in the garden 3 to 4 weeks before the last frost. For the fall season, it’s better to start sowing seeds indoors 10 to 12 weeks before the last frost. Start at such a time that the plant should not mature in hot weather. It’s crucial to carefully start cauliflower at the right time of the season. HOW TO GROW CABBAGE AT HOME WITHOUT SEEDS When to Start Cauliflower Seeds Indoors Take care of the water requirement of the seedlings, and keep the soil evenly moist all the time. It normally takes 8 to 10 days for the seeds to germinate. Remove the plastic wrap after the seedlings appear. Use good quality fertile soil for seed sowing and wrap the soil with plastic, then wait until the seeds sprout. It’s best to plant the cauliflower 4 to 7 weeks before the last frost. You can start the sowing very early and then transplant it outside. Growing Cauliflower IndoorsĪ better way to avoid the weather extremes is to start the cauliflower seeds indoors. From there, the seeds would take up to 4 weeks to be ready to get transplanted. Or else, you can also put them in a greenhouse or cold frame as per your choice and availability. Now you can place the trays on the windowsill if you are growing indoors. Heavy or uneven watering can wash away the seeds. Water it gently and evenly to avoid any damage to the seeds. After sowing, cover it with another layer of compost. Settle the compost and make a small hole of about 1 and a half cm in each cell. Thoroughly rub the compost to avoid any lumps getting into the tray. Fill the tray with seed compost having lower nutrients than standard compost. It is recommended to start sowing the cauliflower seeds in modular trays. The whole cauliflower grows up to 50 to 85 days. Cabbage looper Cauliflower Germination TimeĪ seed normally takes up to 8 to 10 days for germination.Recommended Varieties Of Cauliflower To Grow.When to Start Cauliflower Seeds Indoors.Keep well-watered and feed regularly as the heads mature. Use cabbage collars around the base of the seedlings if cabbage root fly is a problem and protect from birds. 8cm/3in between plants and transplant to their final positions from June, allowing 60 to 75cm/2 to 2½ft between plants. Sow seed very thinly to a depth of 1cm/ ½ in and cover with a fine layer of compost or vermiculite, in rows approx. Seed can be sown in a well-prepared seed bed from late march however to minimise root disturbance, they are best started off undercover in pots or modules and planted out when they have 5 or 6 leaves. Dig-in plenty of manure (such as Orgro) in the autumn. The seedlings are best transplanted to their cropping positions as young as possible to keep growth disruption to a minimum. It is important to keep the soil moist at all stages of the plants' development, which helps prevent checks to their growth. Autumn Planting Onions, Garlic & ShallotsĬauliflowers do best in deeply dug, fertile, moisture-retentive soil.
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