I have no idea But here are afew thoghts to consider. In general summer onions (long day types) take a 100 days or more from seeding to harvest. All onions require loose soil, plenty of water, and lots of N. But the planting bed Must be well drained, They do not tolerate wet feet. They do not tolerate crowding, Minimum spacing 3 inches for small onions 6 inches for large ones. Winter onions (short day) don't well as a summer onion. They bulb premature, resuting in very small bulbs. For future reference, onions plants can be bought locally or ordered fom Dixondale or Browns Omaha. Transplanting seedlings takes much of the guesswork out of direct seeding.
