Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can determine when it's the best time to plant lupine in Zone 6b by using the USDA zone info.

Planting Calendar for Lupine

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

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

The earliest that you can plant lupine 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 lupine and expect a good harvest is probably September. Any later than that and your lupine may not have a chance to grow to maturity. Starting your lupine indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Zone 6b. In the coldest months of winter you can expect an average low temperature of -5°F.

Just be sure to remember that USDA zone info for Zone 6b is not always accurate and the actual date of last frost can change quite a bit from year to year. Since half of the time in Zone 6b there is a last frost after April 15 be ready to cover your lupine 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 Low	0°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.