Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's possible to figure out when it's the best time to plant shallots by reviewing the USDA zone info for Arvada.

Planting Calendar for Shallots

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

Shallots are one of those plants that can tolerate a tiny bit of cold weather which tells us that you can start planting them slightly earlier than plants that are more sensitive to the cold.

The earliest that you can plant shallots in Arvada 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 shallots and expect a good harvest is probably August. If you wait any later than that and your shallots may not have a chance to fully mature. You can get started a little bit earlier by starting your shallots indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Arvada. It might get as low as -10°F during the coldest months of winter.

Always keep in mind that USDA zone info for Arvada is just an average and the actual date of last frost will vary from year to year. Since half of the time in Arvada there is a last frost after April 15 be ready to cover your shallots in the event of a late frost.

USDA Zone Info for Arvada

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Arvada

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