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

In Sumner you can determine when you can plant lupine 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.

Lupine tend to make it in moderate cold which means that you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant lupine in Sumner 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. You probably don't want to wait any later than that or else your lupine may not have a chance to fully mature. You can get started a few weeks earlier by starting your lupine indoors.

Last Frost Date

On average the last frost has passed is on March 15 in Sumner. It might get as low as 15°F during the coldest months of winter.

Always keep in mind that USDA zone info for Sumner is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Sumner it frosts late in the year after March 15 so make sure that you are prepared to protect your lupine in the event of one of those late frosts.

USDA Zone Info for Sumner

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°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 20°F.

Plants to Grow in Sumner

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