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

You can determine when to plant tropical water plants in Lake Elmo by looking at the USDA zone info.

Planting Calendar for Tropical Water Plants

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

Since tropical water plants are not cold tolerant you really should wait until after the last frost has passed before you can plant them.

The earliest that you can plant tropical water plants in Lake Elmo is May. However, you really should wait until June 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. You probably don't want to wait any later than that or else 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 few weeks earlier.

Last Frost Date

On average the last frost is on May 15 in Lake Elmo. You can expect an average low temperature of -25°F in the coldest months of winter.

Since the USDA zone info for Lake Elmo may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in Lake Elmo you get a frost after May 15 be ready to cover your tropical water plants if you have a surprise late frost.

USDA Zone Info for Lake Elmo

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Lake Elmo

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