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 oleander in Happy Valley should be figured out by looking at the USDA zone info.

Planting Calendar for Oleander

Frost tolerance for oleander:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Oleander do not do well in cold weather which tells us that it's necessary to wait until it warms up after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant oleander in Happy Valley 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 oleander and expect a good harvest is probably August. If you wait any later than that and your oleander may not have a chance to fully mature. You can get started a little bit earlier by starting your oleander indoors.

Last Frost Date

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

Since the USDA zone info for Happy Valley may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Happy Valley you get surprised by a frost after March 15 so make sure that you are ready to protect your oleander if you have a surprise late frost.

USDA Zone Info for Happy Valley

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 Happy Valley

You may be interested in your other planting guides for Happy Valley.