Before planting it is a good idea to find your USDA Zone info to estimate 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 first chance to plant rudbeckia in Alexandria can be estimated by checking out the USDA zone info.

Planting Calendar for Rudbeckia

Frost tolerance for rudbeckia:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Rudbeckia do well in moderate cold which tells us that you can plant them earlier than other plants that might not handle the cold.

The earliest that you can plant rudbeckia in Alexandria 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 rudbeckia and expect a good harvest is probably September. Any later than that and your rudbeckia may not have a chance to fully mature. If you are starting your rudbeckia indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

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

Remember that USDA zone info for Alexandria is not always accurate and the actual date of last frost changes from year to year. Half of the time in Alexandria it frosts late in the year after April 15 so make sure that you are prepared to protect your rudbeckia if you have one of those late frosts.

USDA Zone Info for Alexandria

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 Alexandria

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