When to Plant Alyssum in Zone 6b

Before planting it is a good idea to find your USDA Zone info to determine 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 alyssum in Zone 6b can be estimated by checking out the USDA zone info.

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Planting Calendar for Alyssum

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

You can plant alyssum much earlier in the year because they are very cold tolerant.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant alyssum
Possibly ok, but a risky time to plant alyssum
Probably not a good time to plant alyssum

The earliest that you can plant alyssum in Zone 6b 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 alyssum and expect a good harvest is probably September. If you wait any later than that and your alyssum may not have a chance to fully mature. If you are starting your alyssum indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Zone 6b the average date of last frost happens on April 15. It might get as low as -5°F during the coldest months of winter.

Remember that USDA zone info for Zone 6b is an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Zone 6b it frosts late in the year after April 15 so just be sure to be ready to protect your alyssum if you have one of those late frosts.

USDA Zone Info for Zone 6b

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low-5°F
Highest Expected Low0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Zone 6b

You may be interested in your other planting guides for Zone 6b.