One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Sterling you can figure out when you can plant angelonia by using the USDA zone info.

Planting Calendar for Angelonia

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

Angelonia do ok in moderate cold which tells us that you can get them planted just a bit earlier than other frost tender plants.

The earliest that you can plant angelonia in Sterling 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 angelonia and expect a good harvest is probably August. Any later than that and your angelonia may not have a chance to grow to maturity. Starting your angelonia indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Sterling. In the coldest months of winter you should expect an average low temperature of -15°F.

Just be sure to remember that USDA zone info for Sterling may not be accurate from year to year and the actual date of last frost changes from year to year. Half of the time in Sterling last frost occurs after April 15 so make sure that you are prepared to cover your angelonia in the event of one of those late frosts.

USDA Zone Info for Sterling

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 Sterling

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