Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Dayton can be looked at to figure out when you can plant angelonia.

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.

Since angelonia are barely cold tolerant you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant angelonia in Dayton 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 angelonia and expect a good harvest is probably September. Any later than that and your angelonia may not have a chance to really do well. If you are starting your angelonia indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost has passed is on February 15 in Dayton. In the coldest months of winter you can expect an average low temperature of 20°F.

Since the USDA zone info for Dayton may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Half of the time in Dayton you get surprised by a frost after February 15 so always be ready to cover your angelonia if you have a surprise late frost.

USDA Zone Info for Dayton

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Dayton

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