One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The best time to plant tropical water plants in Andover can be determined by reviewing 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 when the weather gets warmer.

You should not plant tropical water plants until after the last frost has passed because they require warm weather.

The earliest that you can plant tropical water plants in Andover 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 grow to maturity. You can get started a little bit earlier by starting your tropical water plants indoors.

Last Frost Date

The average date of last frost is May 15 in Andover. In the coldest months of winter you can expect an average low temperature of -25°F.

Since the USDA zone info for Andover is an average the actual date of last frost is different every year. Half of the time in Andover last frost occurs after May 15 so make sure that you are ready to protect your tropical water plants if you have a late frost.

USDA Zone Info for Andover

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 Andover

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