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.

A common way of determining when it's the best time to plant tropical water plants is to consult the USDA zone info for Edinburgh.

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 really shouldn't plant tropical water plants until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant tropical water plants in Edinburgh 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 grow to maturity. You can get started a few weeks earlier by starting your tropical water plants indoors.

Last Frost Date

The average date of last frost is April 15 in Edinburgh. You can expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Edinburgh is not always accurate the actual date of last frost will vary from year to year. Half of the time in Edinburgh you get a frost after April 15 so always be ready to protect your tropical water plants if you have one of those late frosts.

USDA Zone Info for Edinburgh

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 Edinburgh

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