Pepper plants and cold

grow_life(6A OH)April 14, 2014

I had a fellow market gardener around here tell me that pepper plants will vernalize if they get exposed to temps in the 40's and will then grow thick lush foliage but set very little fruit through the rest of the growing season. Anyone else heard of this, and if there is anything to it, should I give up on my flat of Thai that got frost nipped?

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That's been my experience with pepper plant seedlings exposed to temps below 45F.

Yeah, give up on them or have very few this season

    Bookmark   April 15, 2014 at 3:44AM
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Mark(Oregon, Zone 8)

Not to second guess boulderbelt who always has good advice, but i've never had this problem. The temps in my greenhouse regularly dip below 45F in late winter when my peppers are still in flats and I have great fruit sets regardless.
Frost nipped plants may be another level of extreme, and i can't say from experience if they'll recover. Good luck.

    Bookmark   April 16, 2014 at 10:13AM
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Haven't had that issue myself, but perhaps it has something to do with duration of uninterrupted exposure as well. I plant mine out in early June when average lows are in the upper 40s and we get mid-40s occasionally throughout the summer.

    Bookmark   April 16, 2014 at 11:11AM
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grow_life(6A OH)

Thanks for the input. Doing a bit more research online shows the jury is still out, with the effect noted but dependent on air temperature, soil temperature, duration of event, and plant variety. I guess nobody has done a direct study to test all the variables. I've started another flat of the same varieties and they will be under grow lights indoors until it is much warmer out. In the meantime I have moved the afflicted flat inside as well. They appear to have recovered nicely and are growing on well. I'll try planting them out side by side and see if there is a difference.

    Bookmark   April 17, 2014 at 8:23PM
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