Before planting it is a good idea to find your USDA Zone info to figure out 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.

In Lake Stevens you can determine when you can plant dipladenia by reviewing the USDA zone info.

Planting Calendar for Dipladenia

Frost tolerance for dipladenia:	Not tolerant of frost.
When to plant:	After the last frost has passed.

It's probably a bad idea to plant dipladenia until after the last frost because they are not cold tolerant.

The earliest that you can plant dipladenia in Lake Stevens 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 dipladenia and expect a good harvest is probably August. Any later than that and your dipladenia may not have a chance to grow to maturity. You can get started a little bit earlier by starting your dipladenia indoors.

Last Frost Date

On average the last frost is on March 15 in Lake Stevens. It might get as low as 15°F during the coldest months of winter.

Since the USDA zone info for Lake Stevens is not always accurate the actual date of last frost can change quite a bit from year to year. Since half of the time in Lake Stevens you get surprised by a frost after March 15 be ready to cover your dipladenia in the event of a surprise late frost.

USDA Zone Info for Lake Stevens

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Lake Stevens

You may be interested in your other planting guides for Lake Stevens.