Onion Bulbs Sets for your Home Garden Cool Beans N Sprouts Brand by Jacobs Ladder Ent We do not guarantee any size , shape or form on bulb sets. We can not control the size of onion bulb sets. You will get the amount of bulbs you puchase and they will be random size bulbs. Growing your own onions opens up a world of tastes that you just can’t find at your local grocery store. They also take up very little space so you can grow onions in containers, flower garden borders, or if you have the room plant longer rows in your backyard garden. Planting, Growing, and Harvesting Onions *In spring, plant onion sets outdoors as soon as the ground can be worked, usually in late March or April, when temperatures are no longer likely to dip below 28°F *A fall-planted crop of onions needs at least 4 to 6 weeks of warm temperatures to become established in the ground. They will remain dormant during the cool season, As the temperatures and soil warm again in early spring, the onions come back to life. Bury onion sets 2 to 6 inches apart, gently pressing them 1 to 2 inches deep into loose soil. (Use the closer spacing if you want to pull immature onions as scallions.) Space transplants 4 to 5 inches apart and rows 12 to 18 inches apart. Set the bulbs with the point end up. Again, don’t bury them more than 2 inches under the soil. It’s important that onions aren’t planted too deep, as this can affect bulb development. Mulch with straw between rows to help retain moisture and to keep weeds away. Generally, if light mulch is used, onion plants do not need consistent watering. About 1 inch of water per square foot per week, including rainwater, is sufficient. If you want sweeter onions, water more. To deter bolting, water often during hot spells.