The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A way of estimating when it's the best time to plant didiscus is to consult the USDA zone info for Lake Bluff.

Planting Calendar for Didiscus

Frost tolerance for didiscus:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Didiscus do ok in moderate cold which tells us that you can get them planted just a bit earlier than other plants that might not handle the cold.

The earliest that you can plant didiscus in Lake Bluff is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant didiscus and expect a good harvest is probably August. Any later than that and your didiscus may not have a chance to fully mature. You can get started a little bit earlier by starting your didiscus indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Lake Bluff. You should expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Lake Bluff 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 Bluff you get a frost after April 15 be ready to cover your didiscus if you have a late frost.

USDA Zone Info for Lake Bluff

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°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 -10°F.

Plants to Grow in Lake Bluff

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