By: Scott Eckert, County Extension Agent, Horticulture
If you planted cole crops such as cabbage, broccoli and cauliflower around St. Patrick’s Day, we are near the time when they will need a little fertilizer boost. These plants need to mature before summer heat arrives, so they must grow quickly while the weather is cool.
A sidedressing of fertilizer about 3 weeks after transplanting helps plants continue to grow rapidly. Use fertilizers high in nitrogen for sidedressing such as nitrate of soda or blood meal at the rate of 2 pounds per 100 feet of row. You may also use lawn fertilizers that have close to 30 percent nitrogen such as a 30-3-4 or 29-5-4 but the rate should be cut in half to 1 pound per 100 feet of row.
Do not use lawn fertilizers that have weed killers or preventers. Fertilizer must be watered in if timely rains don’t do that job for you
Harvey County Extension
800 N Main, Room 11, P.O. Box 583
Newton, KS. 67114 316-284-6930