One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The best time to plant gloriosa lily in Lake Oswego should be estimated by checking out the USDA zone info.

Planting Calendar for Gloriosa Lily

Frost tolerance for gloriosa lily:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's not a good idea to plant gloriosa lily until after the last frost when the weather gets warmer because they do not do well in cold weather.

The earliest that you can plant gloriosa lily in Lake Oswego is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant gloriosa lily and expect a good harvest is probably August. If you wait any later than that and your gloriosa lily may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your gloriosa lily indoors.

Last Frost Date

In Lake Oswego the average date of last frost happens on March 15. You can expect an average low temperature of 15°F in the coldest months of winter.

Since the USDA zone info for Lake Oswego is not always accurate the actual date of last frost will vary from year to year. Half of the time in Lake Oswego you get surprised by a frost after March 15 so always be ready to cover your gloriosa lily in the event of one of those late frosts.

USDA Zone Info for Lake Oswego

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 Lake Oswego

You may be interested in your other planting guides for Lake Oswego.