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Is an olive tree frost resistant? I have a small olive tree planted in a flower pot.

There are small flies that put their larvae into the soil. Usually they are gone when the flower is outside for several days, but it's currently getting colder every night.

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They're not closely related at all (they're both eudicots), but Russian Olive trees can take quite cold weather. That's probably not what you wanted to know, though. :) If your tree is in a container, I imagine it won't be able to take as cold of temperatures as it could in the ground, with deep roots, unless it's sheltered. I could be wrong. – Shule Oct 29 at 1:34

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up vote 9 down vote accepted

Olive trees prefer hot weather, but may stay outdoors as long as the temperature doesn't dip below 14F.

I plan on getting an Arbequina olive tree and I know those are fairly frost resistant.

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Just for clarification: 14˚F is -10˚C – PVitt Sep 3 '14 at 7:06

Yes, most olive trees are frost resistant, but do not like it to get too low. Usually the most cold-tolerant varieties can take temperatures of down to 15-20 degrees Fahrenheit. If it gets colder than that in your area, or stays cold for extended periods, try moving it indoors to a sunny window during the worst parts. But once it's used to indoor temperatures, it can be damaged more easily by sudden placement in a cold environment. Try not to water too much during cold periods because the plant slows down and can't handle as much; too much water can cause root rot.

On the flies, I'm not entirely sure what they are, without a picture, but if you put a layer of dry material (such as pencil shavings or shredded paper) on top, it will discourage the laying of eggs.

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It is planted in a tub and it's outside period is just to eliminate the larvae. – PVitt Nov 16 '11 at 15:15
The flies might be fungus gnats. There's probably less fungus for them when the plants are outside. @PVitt – Shule Oct 29 at 1:38

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