Poinsettia Plant Temperature Range
The day temperatures dt averaged from sunrise to sunset ranged from 63ð76 f while the night temperatures nt ranged from 56ð68 f.
Poinsettia plant temperature range. Therefore move the poinsettia to a location where it will not receive any nighttime light or cover it with a box. They will tolerate full sun on a porch or patio but must be protected from frost or freezing temperatures. Dropping the temperature to about 60 f at night will not hurt the plant. Inside your home keep them in a brightly lit area away from drying or chilly drafts.
Bracts are the leaves of poinsettia that change color depending on light exposure. Poinsettia plants are ideally suited to the indoor temperatures of most homes of between 60 70 f 16 21 c. To keep the poinsettia in bloom as long as possible maintain a temperature of 65 to 75 f during the day. Poinsettia crops are delayed when night temperatures drop below 50f.
At first color plants were moved into greenhouses that provided 16 different day night temperature combinations. Day temperatures can vary between 75 80 f. If you ve ever seen a leggy poinsettia in bloom with only a couple of sad looking leaves hanging on it was probably exposed to temperatures that were too. Avoidance of hot or cold draughts is essential to prevent leaf drop.
Once bracts are fully formed many growers drop temperatures to 50f at night to intensify bract coloration. Temperatures towards the lower end of the temperature range will reduce the metabolism of the plant and prolong blooming time. Poinsettias grow well in moist soil and temperatures between 65 and 70 degrees f. Poinsettias are not poisonous but the sap may cause dermatitis.
Allow plenty of light during the day so the plant can absorb enough energy for flowering. Poinsettias are tropical plants and prefer a temperature range of 65 f night and 75 f 80 f day. At this range the cold hardiness of poinsettias is below its tolerant point and leaves will drop. Provide semi cool humid locations in bright indirect light with plenty of.
Poinsettias were grown at normal greenhouse temperatures until first color. You can move the plant outdoors but poinsettia frost damage is a real threat if your area s temperatures dip below 50 degrees fahrenheit 10 c. However cold drafts allowing the leaves to touch a cold window or more importantly lack of decent light can injure the leaves and cause premature leaf drop. They can be grown outdoors during summer.
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