One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By using the USDA zone info for Shelton you should be able to estimate when it's a good idea to plant welsh onion.

Planting Calendar for Welsh onion

Frost tolerance for welsh onion:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Welsh onion can survive in very little cold which tells us that you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant welsh onion in Shelton is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant welsh onion and expect a good harvest is probably August. You probably don't want to wait any later than that or else your welsh onion may not have a chance to fully mature. Starting your welsh onion indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Shelton. It might get as low as -5°F during the coldest months of winter.

Keep in mind that USDA zone info for Shelton is not always accurate and the actual date of last frost changes from year to year. Since half of the time in Shelton it frosts late in the year after April 15 be ready to protect your welsh onion if you have a late frost.

USDA Zone Info for Shelton

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Shelton

You may be interested in your other planting guides for Shelton.