One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Arvada you can figure out when you can plant impatiens by checking out the USDA zone info.

Planting Calendar for Impatiens

Frost tolerance for impatiens:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

You can not plant impatiens until after the last frost when the weather gets warmer because they do not do well in cold weather.

The earliest that you can plant impatiens in Arvada is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant impatiens and expect a good harvest is probably August. Any later than that and your impatiens may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your impatiens indoors.

Last Frost Date

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

Remember that USDA zone info for Arvada may not be accurate from year to year and the actual date of last frost will vary from year to year. Half of the time in Arvada there is a last frost after April 15 so make sure that you are prepared to protect your impatiens 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.