The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. 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 aubretia in Highwood can be figured out by referring to the USDA zone info.

Planting Calendar for Aubretia

Frost tolerance for aubretia:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Aubretia are very cold tolerant which means that you can plant them much earlier than plants that are more sensitive to the cold.

The earliest that you can plant aubretia in Highwood is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant aubretia and expect a good harvest is probably September. You probably don't want to wait any later than that or else your aubretia may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your aubretia indoors.

Last Frost Date

The average date of last frost is April 15 in Highwood. It might get as low as -15°F during the coldest months of winter.

Since the USDA zone info for Highwood is an average the actual date of last frost can change quite a bit from year to year. Half of the time in Highwood you get surprised by a frost after April 15 so always be ready to protect your aubretia if you have a surprise late frost.

USDA Zone Info for Highwood

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 Highwood

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