Adjusting last frost date for warmer conditions - Page 2

AlittleSalt · January 19, 2016

Imp, I agree. The same is true with pecan trees. Pecan trees are even more skittish - They are the last to bud out in spring here - and the first to loose their leaves in fall.

sjamesNorway · January 19, 2016

The following are excerpts from a U. of Colorado extension article which I found helpful, especially the part about stunting growth:

“Tomato plants need night temperature above 32ºF and daytime temperatures above 60ºF. They are readily killed by a light frost. A week of cool daytime temperatures (below 55ºF) will stunt plants, reducing yields.”

“Tomato pollination is temperature dependent. If nighttime temperatures drop below 55ºF, pollen fails to develop and flowers that open the following morning will not set fruit. Cool nights often interfere with fruit set for early tomatoes and in higher elevations. Blossom set sprays help set fruit even with cool nights.”

Here are the full notes:

http://www.ext.colostate.edu/mg/Gardennotes/717.html

Steve

January 19, 2016	#16
AlittleSalt BANNED FOR LIFE Join Date: May 2014 Posts: 13,333	Imp, I agree. The same is true with pecan trees. Pecan trees are even more skittish - They are the last to bud out in spring here - and the first to loose their leaves in fall.

January 19, 2016	#17
sjamesNorway Tomatovillian™ Join Date: Oct 2014 Location: Norway Posts: 1,049	The following are excerpts from a U. of Colorado extension article which I found helpful, especially the part about stunting growth: “Tomato plants need night temperature above 32ºF and daytime temperatures above 60ºF. They are readily killed by a light frost. A week of cool daytime temperatures (below 55ºF) will stunt plants, reducing yields.” “Tomato pollination is temperature dependent. If nighttime temperatures drop below 55ºF, pollen fails to develop and flowers that open the following morning will not set fruit. Cool nights often interfere with fruit set for early tomatoes and in higher elevations. Blossom set sprays help set fruit even with cool nights.” Here are the full notes: http://www.ext.colostate.edu/mg/Gardennotes/717.html Steve