The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Medical Lake you can figure out when you can plant tropical water plants by referring to the USDA zone info.

Planting Calendar for Tropical Water Plants

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

You can not plant tropical water plants until after the last frost has passed because they do not do well in cold weather.

The earliest that you can plant tropical water plants in Medical Lake 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 tropical water plants and expect a good harvest is probably August. Any later than that and your tropical water plants may not have a chance to really do well. Starting your tropical water plants indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost is on April 15 in Medical Lake. In the coldest months of winter you should expect an average low temperature of -10°F.

Keep in mind that the actual date of last frost is just an average because it is based on the USDA zone info for Medical Lake and it can change quite a bit from year to year. Half of the time in Medical Lake you get a frost after April 15 so always be ready to protect your tropical water plants if you have a surprise late frost.

USDA Zone Info for Medical Lake

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 Medical Lake

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