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When to Plant Angel's Trumpets in Washington, IL

One of the first steps you take when you are estimating your gardening schedule is find your 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.

One way of making a decision about when it's possible to plant angel's trumpets is to check out the USDA zone info for Washington.


Planting Calendar for Angel's Trumpets

Frost tolerance for angel's trumpets: Tolerant of a very small amount of frost.
When to plant: Up to 3 weeks before last frost.

You can plant angel's trumpets just a tiny bit earlier in the year because they do ok in moderate cold.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant angel's trumpets
Possibly ok, but a risky time to plant angel's trumpets
Probably not a good time to plant angel's trumpets

The earliest that you can plant angel's trumpets in Washington is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant angel's trumpets and expect a good harvest is probably August. You probably don't want to wait any later than that or else your angel's trumpets may not have a chance to grow to maturity. If you are starting your angel's trumpets indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Washington. It might get as low as -15°F during the coldest months of winter.

Keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Washington and it is different every year. Half of the time in Washington you get surprised by a frost after April 15 so just be sure to be ready to protect your angel's trumpets if you have a late frost.

USDA Zone Info for Washington

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low-15°F
Highest Expected Low-10°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 -10°F.

Plants to Grow in Washington

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