When to Plant Oleander in Newton, IA

The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. 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 Newton can be estimated by reviewing the USDA zone info.

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Planting Calendar for Oleander

Frost tolerance for oleander: Not tolerant of frost.
When to plant: After the last frost when the weather gets warmer.

Oleander are not cold tolerant which tells us that you need to wait until it warms up after the last frost has passed before you can plant them.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant oleander
Possibly ok, but a risky time to plant oleander
Probably not a good time to plant oleander

The earliest that you can plant oleander in Newton 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 really do well. If you are starting your oleander 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 Newton. It might get as low as -15°F during the coldest months of winter.

Since the USDA zone info for Newton is an average the actual date of last frost can change quite a bit from year to year. Half of the time in Newton last frost occurs after April 15 so make sure that you are ready to cover your oleander in the event of a surprise late frost.

USDA Zone Info for Newton

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 Newton

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