When it come to growing onions in New Hampshire , timing is vital . The unique grow condition in this state have a significant impact on Allium cepa cultivation and can make all the difference of opinion between a liberal harvest and a frustrating one . If you ’re an onion agriculturalist in New Hampshire , it ’s essential to know the best time to plant onion to ensure maximal yield and quality . There are time of year - extending techniques that will greatly profit your crop ’s health and yield . There is a lot to study when growing onions in New Hampshire , but the tasty reward are worth it .
Good Onion Varieties to Grow in New Hampshire
onion plant are a popular vegetable craw among gardeners due to their versatility in the kitchen and the easiness with which they can be grow . There are numerous change of onions , each with its unique characteristic and United States of America .
Here are some of the more popular onion varieties that gardeners like to grow :
Overall , each onion potpourri has its alone flavor visibility and culinary uses , making them a democratic and various harvest for gardeners .

When to Plant Onions in New Hampshire
Onions are a cool - time of year harvest that can be engraft in the spring as presently as the soil can be worked . The exact planting time will depart look on your location and climate , but generally , onion plant should be planted about 2 - 4 weeks before the last expected hoar particular date in your area . The Allium cepa planting date in New Hampshire are :
Additional Resource : line up Your New Hampshire Hardiness Zone
Before planting onions , it ’s substantive to fix the territory by loosening it to a depth of 4 - 6 inches and incorporating compost or well - decompose manure . Onions favor well - draining land with a pH between 6.0 - 7.0 .
To plant onion sets , which are little onion plant bulbs , make a furrow about 1 inch recondite , plant the set 4 - 6 inch apart , and spread over them with soil . For onion seeds , sow them about 1/4 inch deep and 1 in apart , and underwrite them with filth . Water the grease soundly after plant , and keep the grease moist until the seedlings emerge .
Onions get best in full sun and require consistent wet to grow calibre bulbs . They also benefit from unconstipated fertilization throughout the rise time of year . Weed control is essential , so keep the area around the plant spare of weeds .
In conclusion , onion should be planted in the spring , 2 - 4 weeks before the last expected frost date in your area . Prepare the grunge , plant the sets or seeds , urine the well , and keep the surface area liberal of weeds . With proper care , you’re able to enjoy a bountiful harvest of delicious Allium cepa in the summer and downfall .
Planting Onions From Seed
onion can be grown from seed , but it takes longer than planting Allium cepa sets or start . It ’s recommended to plant Allium cepa starts rather than seeds because onion seeds take a longer time to germinate and grow , and the plant may not get on as uniformly as onion sets .
However , planting Allium cepa from come can be a good alternative if you want to grow a specific mixture that is n’t usable as sets or beginning . Planting onion seed can also be more monetary value - effectual than purchasing sets or starts .
If you resolve to embed onions from ejaculate , you should start up the seeds indoors 8 - 10 weeks before the last have a bun in the oven freeze day of the month in your orbit . If you decide to plant onions from seeded player , you should start the seeds indoors 8 - 10 hebdomad before the last anticipate frost engagement in your surface area . The final frost dates in New Hampshire are :
In New Hampshire , start your onion seed indoors around :
To start onion seeded player indoors , fill germ trays with a good quality seminal fluid - starting mixing , and sprinkle the seeds on top of the soil . Cover the seeds with a thin layer of soil , irrigate the tray , and keep it in a ardent , undimmed localisation . Onion seed need a consistent temperature of 65 - 75 ° F to germinate , so you may ask to practice a heat matte or acquire light to maintain the right conditions .
After the seeds have pullulate , thin the seedling to about 1 in apart , and continue to grow them indoors until they are with child enough to transplant outside . Harden off the seedling by gradually exposing them to outdoor conditions for a calendar week before transplanting them into the garden .
When to Harvest Onions in New Hampshire
onion are ready to harvest when the leaves jump to turn yellow and come over . This typically happens in belated summertime or other evenfall , about 100 - 120 24-hour interval after plant , depending on the assortment and growing conditions .
To verify if the onions are quick for harvest , gently labor back the soil around the cornerstone of the onion bulb to see if they have develop into mature bulbs . If the light bulb are of the desired size , you could start to reap them .
To harvest onions , use a garden crotch or power shovel to cautiously lift the bulbs out of the soil . lightly loosen the dirt around the bulbs to annul damage them . Once the bulbs are out of the soil , give them on the ground for a day or two to dry out and cure in the sunshine . This will help to toughen the skins and extend the reposition life of the Allium cepa .
After the onions have dried and cured for a day or two , cut off the stems and root to about 1 in from the bulb . you’re able to then store the Allium cepa in a cool , juiceless position , such as a garage or basement , with serious air circulation . hang them in mesh cup of tea or tying them in braids is also a honest way to lay in onion .
Onions should be hive away in a home with a temperature between 32 - 40 ° F and with low humidity . forefend storing onions near potatoes or other fruits and vegetables that produce ethylene throttle , which can cause onions to spoil more rapidly .