The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Norwalk you can estimate when to plant asters by reviewing the USDA zone info.

Planting Calendar for Asters

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

Asters do ok in a little bit of cold which means that you can plant them a little earlier in the year than plants that are more sensitive to the cold.

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

The last month that you can plant asters and expect a good harvest is probably October. Any later than that and your asters may not have a chance to fully mature. If you are starting your asters indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is January 31 in Norwalk. It might get as low as 35°F during the coldest months of winter.

It's important to remember that USDA zone info for Norwalk is not always accurate and the actual date of last frost changes from year to year. Half of the time in Norwalk you get surprised by a frost after January 31 so make sure that you are prepared to protect your asters in the event of a late frost.

USDA Zone Info for Norwalk

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	35°F
Highest Expected Low	40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in Norwalk

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