Lowest Temperature Tomato Plants Can Withstand In Greenhouse
soulreaver
12 years ago
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timmy1
12 years agodigdirt2
12 years agoRelated Discussions
To What Temperature do you Heat your Greenhouse?
Comments (6)Turns out I have not much choice - I've got it heated to 50F because that seems to be the lowest my heater can be set without going down to pilot only which is too cold. All of my babies were okay this morning - I guess I'd better get back to work here so I can pay the big gas bill that's coming... many thanks Lori...See Morewhat's the lowest temp that most veggies/plants can handle
Comments (4)You have alot of loaded questions in this post. First, let me just restate what is often not well related about "UNHEATED" greenhouses. They will all usually have an inside air temperature equal or only slightly higher than the outside temperature by night's end. Even those who use various heat sinks have found that by the next morning their reserve heat is gone. This isn't to state that all the insulations and heat conservation methods aren't great. You will need much less supplement heat (if any, depending on crop) than you would otherwise. When the sun comes up everything is different. The temperatures inside will likely get too hot even in the middle of winter on a very sunny day. Some way of ventilating that heat without introducing a cold draft onto your tender plants is important. I've grown cilantro in PA overwinter without any heat. I think it is only slowed in growth by frosts. Parsley would probably be similar once you get it started. We have cut parsley in December although regrowth is much slower then. Basil is a different crop. It won't do near as well if you have cool nights. Leaves on established plants may discolor if temperatures drop near 40F. It is a sensative annual. In my opinion you could grow the cilantro, parsley and a host of other greens and eliminate the expensive heat. Since parsley is a biennial try to isolate it so it won't interfere with other planting practices. I would wait for warmer weather to grow basil....See MoreGreenhouse Winter Temperature in Z6b?
Comments (21)StressBaby... I'm not so sure about tha causes of citrus leaf drop. I have 5 or 6 citrus, a couple of mandarin oranges, a couple of grapefruit and a couple of I-forget-what-i-planteds. The oranges tended to get infested with spidermites over the winter so a few years ago a decided to toss them in the garage for the winter as i just didn't want the mites spreading to other plants. My garage walls are insulated and i do have insulated doors, but there is no addotional heat. All heat is from the windows (I have 3 large south facing windows), what must leak out from the house (insulated 2x6 contruction) and whatever heat comes from the engines. I am in zone 5, massachusetts. I do occasionally get ice on the floor if the outside temps stay below zero for a few days. That first year, i did get the leaf drop you describe. I really thought i had lost them all. One lost about 90% of it's branches, the rest lost most of their leaves. But come Spring, they cam back to life and recovered fully. The following year, i decided to take better care of them since they deserved a bit of credit. I made sure i stuck to a weekly watering plan and that was enough to prevent almost ANY leaf drop. I did get a bit of freeze damage on one tree closet to the doors. This was closer to the springtime when they had started sending out new growth. SO i have now overwintered the in the unheated garage for 3 winters. Temps have been as low as -19F at night outside, and i hardly get the leaf drop. I am of the mind that it was completely due to my neglect that first winter and the lack of water. This winter i plan to put a themometer in the garage so i have an idea of what the temps actually are, but i am pretty much amazed they do so well. Poppa...See MoreCan I use a chiller to lower the temperature of Cherry Tomatoes?
Comments (3)I did both this summer  one was not enough. My climate is hot & dry  no ambient humidity during the summer. If you have high temperatures and mist the leaves only, you may still boil your roots. If you are still having droopy leaves with coolant chilling, then you need to spritz leaves. Spritzing the leaves does not last long with high temperatures, but it helps. High temperatures & hydro tomatoes can result in calcium deficiency & blossom end rot. Some of the hydro tomato pictures online look good, but have black bottoms. The cherry varieties are not supposed to do that, so it is a good choice. Some of the forum users have come up with neat ideas which may help you. Below are the links for some of their devices: Ice Chest for nutrient resevoir http://forums.gardenweb.com/forums/load/hydro/msg041115104587.html Homemade evap cooler to chill nutrient tank & cool greenhouse http://forums.gardenweb.com/forums/load/hydro/msg0801115431521.html I donÂt know if you have any cool weather during your winter, but warming nutrient during the winter may be of use. I installed a heater to root some cuttings this winter & they are rooting - outside. It is slower, but I do not have the problem with algae that I did in the summer. HereÂs a link: Water temp and 'zone pushing' http://forums.gardenweb.com/forums/load/hydro/msg051204563783.html...See Morepoppa
12 years agomytime
12 years agoJon_dear
12 years agoljpother
12 years agopoppa
12 years agosoulreaver
12 years agomytime
12 years agopoppa
12 years agosoulreaver
12 years agotimmy1
12 years agoDaveywb
10 years agoseysonn
10 years agosheltieche
10 years agoK K
7 years agolast modified: 7 years agoBarrie, (Central PA, zone 6a)
7 years agoK K
7 years agoBarrie, (Central PA, zone 6a)
7 years agoK K
7 years agoBarrie, (Central PA, zone 6a)
7 years agoCommon Cents
7 years agoBarrie, (Central PA, zone 6a)
7 years agoCommon Cents
7 years agoBarrie, (Central PA, zone 6a)
7 years ago
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Barrie, (Central PA, zone 6a)