Questions tagged [temperature]

For questions about thermal environment. Use this tag with questions about the effect of different temperature levels on plants, landscape elements, insects and pests or how to create an environment with certain temperature levels. If possible indicate temperatures in questions in both Celsius and Fahrenheit degrees.

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After germination, how warm do chilli plants need to be?

How does temperature affect the growth of the chill plant after germination? I am currently working on the understanding that to germinate, chilli seeds need to be kept at 25°C during the day for 12 ...
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How long do chilli seeds need to be at 25°C to germinate?

I’m able to economically maintain my greenhouse at 25°C for about 4 hours during the day. Generally speaking, is this enough for optimal germination of chilli seeds? Or, do you need to have prolonged ...
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3 votes
1 answer
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Are clay pots better than plastic ones in hot temperatures?

In the region where I live summers are relatively hot (up to 35°C or 95°F) and sunny. Some of my plants grow in dark plastic pots, which can get pretty warm. When I water them, the water and the soil ...
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What temperature will kill camellia plants?

I have many camellia japonicas and sasanquas. In very cold weather I protected newer smaller plants. But global warming has dealt a bad blow to E TX , we had +7 °F overnight and in the 20's °F for 4 ...
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1 answer
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Bay Leaf heat tolerance

Can a bay leaf tree tolerate high heat? We want to plant one in a west facing planter backed by a tall brick wall. It rarely gets below freezing but summer temps can approach 120 °F. Will the tree ...
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Is it safe to bring plants inside in the middle of winter?

I know that bringing plants from +20°C to -10°C can cause a lot of stress, because they need time to adjust to cold temperatures. Does it work the other way around too? In other words, is it ok to ...
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1 vote
2 answers
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Watering new turf under ever changing condition

We laid new turf like 9 days ago. It has been turning green and each turf are growing in each other blurring the lines. Thanks to @bamboo , I been watering it twice daily n none in rainy days as uk ...
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4 answers
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Is my conservatory too hot for plants?

I have a small all-glass conservatory. It's essentially a greenhouse joined onto the side of the house, and it's getting remarkly hot in the current sunny weather (North London, UK). When the doors/...
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How does fall planted garlic cope with snow, and freezing temperatures?

Last fall I planted garlic, and it has a few leaves sticking out of the ground now. How will this effect the leaves?
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Can a dark but warm environment put plants into dormancy?

I bought a Juniper. During winter, can I make it undergo dormancy by putting it in a dark but warm (around 20 - 25 degree Celsius) location? Thanks.
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Should I start seeds early indoors in my zone?

I am a pretty new gardener, this would be my second year. This year I tried starting a lot of hot peppers and eggplants, a lot of the peppers died before showing the first true leaves, lot of ...
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1 answer
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How deep and at what time of the day should I measure soil temperature?

I've never tried direct sowing. This year I want to try planting cucumber, watermelon, pumpkin, squash, zucchini and a few other directly outdoors. Mostly because I already have >150 little pots with ...
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Finding How many hours my orchard have been under 7°C

I have bought an orchard which has 42 apple trees 30 apricots and 22 walnuts. And I want to know if my orchard is suitable for apple farming or not. I have red that apple trees should be in a location ...
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4 votes
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How hot can soil get if daily temperatures persist above 100°F?

I am doing some research on ponderosa pines and climate change. I am currently trying to find (with no luck) how hot soil can get if subjected to direct daily sunlight with temperatures exceeding 100°...
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4 votes
1 answer
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Are my pineapple plant and papaya plant saveable?

I have a white pineapple (sugarloaf pineapple), and a papaya tree that that were growing all spring and summer in Salt Lake City, UT. They were both doing very well, and I was planning on taking them ...
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Can puffball spores survive freezing?

I'm trying to inoculate the yard with puffball scraps, and was wondering if the fresh spores on the lawn will be able to survive freezing so I can get several in the yard next year.
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What's the best temperature for lavender (Celcious) and the climate in general?

I'm planting a lavender. I'm living in the Philippines, it's like 30°C (86°F) here and I'd like to know the temperature and the weather for lavender. It's currently raining here.
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Is there a selective herbicide for crabgrass that can be applied during high temps?

I'm in Alabama zone 8a, and crabgrass is taking over my Zoysia lawn. I just purchased the home and was not able to put down a spring preemergent. The crabgrass infestation is pretty thick in spots and ...
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6 votes
2 answers
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Can eggplants survive down to 33 °F (1°C)?

We're getting a cold snap in May after the cold spring, and was wondering how cold eggplants can go while still surviving.
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1 answer
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Does most fungus grow better in hot damp conditions, or normal temperature conditions?

I'm trying to figure out whether or not I should add some life compost to top dress an area I'm trying to promote fungal action in that area or not. Does most fungus grow better in compost like ...
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3 votes
1 answer
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Growing conditions for hydroponics - Vanilla Planfolia and Saffron (Crocus Sativus)

Creating an indoor, temperature and humidity controlled hydroponics setup. Wanted advice on whether I can grow the following: Vanilla Planfolia Saffron (Crocus sativus) I was also wondering if ...
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3 votes
3 answers
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Does "two weeks before the last frost" mean when the ground is still frozen?

I was reading how to plant catnip seed, and noticed that it said 1-2 weeks before the last frost. Does that mean to plant it when the ground is still frozen?
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3 votes
2 answers
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Saving cyclamen frozen in pots outside?

I have large cyclamen in pots on my south facing balcony. This morning, thanks to 'The Beast From The East' (extremely cold weather), they are frozen in their pots and drooping, what is my best line ...
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2 answers
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Temperature on the radiator

So I am having difficulty sprouting my chili seeds using the ENO method (wet cloth) because I believe the temperature at my place fluctuates too much between 16°C during the day when I'm working and ...
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1 vote
1 answer
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How warm should soil be for propagation of hardwood black currant cuttings?

I have hardwood cutting from a couple of black currant bushes collected this winter. Many have been planted in small pots as I'm getting them started indoors on a warming mat. The warming mat is ...
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3 votes
1 answer
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How do you measure soil temperature?

I've been given the instructions "plant young plants only after the ground temperature reaches 70°F (21°C), about 2 to 3 weeks before the last frost." I looked up ground temperatures in my area and ...
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Should I make a mini-greenhouse for my temperature-sensitive bonsai?

I have a 5 years old Fukien Tea, which just arrived in home. I live in the south of Spain, and my city has strong temperature changes. The temperature goes aprox. like this: Spring: 20 - 25 º Celsius ...
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6 votes
2 answers
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Which soil types are the best and worst thermal insulators?

A lot of plants are supposed to do better with warmer roots. So, it stands to reason that they would do better with soil with poor insulation qualities during the growing season, and that they might ...
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4 votes
0 answers
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Do tomato plants like temperature and humidity changes?

I am growing some tomatoes in pots in a toy greenhouse. I've put a thermometer/ humidity meter inside. The relative humidity changes from around 55% to 75%, and correspond to highest temperature of ...
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5 votes
3 answers
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Which crops or vegetables can withstand 40 degrees Celsius?

I want to know which crops or vegetables will withstand 40 degrees Celsius (103 degrees Fahrenheit)?
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7 votes
5 answers
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Does wind chill affect plants?

Aside from breakage, does wind in freezing weather damage plants? In hot weather, wind causes faster evaporation and can kill a plant by drying it out that way. How can air movement damage plant ...
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3 votes
3 answers
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Should I water new sod in the winter?

Part of my yard was dug up for utility work. They filled it in and put sod down. I'm in US Midwest and winter is upon us. The low temperatures have just recently begun dipping below freezing, highs ...
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1 answer
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How should I care for freeze damaged tomato plants?

I've read the other answers but this question is a bit different. We've had 2 freezes each month this summer. 90 to 100 degrees (F) daytime and plummeting to 35 or lower at night. We have covered ...
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4 votes
0 answers
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Can you grow tropical plants (ginger) on a hugelkultur in a cool climate?

Ginger is a warm climate plant that can be grown in cool climates indoors with an ambient temperature of 25 - 30C (75-85F). When you grow plants on the top of a hugelkultur, as long as the trees and ...
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2 votes
1 answer
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Watering plants and temperature [duplicate]

It seems obvious to not shock roots with hot or cold water when watering, but are there benefits to using water with a certain temperature? For example, can temperature stimulate root growth or have ...
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2 votes
1 answer
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F1 Cherry Tomato Plant Temperature

I am growing F1 Cherry tomato (Sweet Aperitif,Sweet Million, Sun Gold), they set flowers, and some flowers drop and start to get fruits, the weather is clear and between 23C to 30C most days, but ...
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8 votes
3 answers
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If I harvest bell pepper, will it grow back? (I control the temperature in my small greenhouse)

If I harvest bell pepper, will it grow back? (I control the temperature 25 C* in my small greenhouse) If yes, I pick bell pepper fruit only or it needs pruning also after harvesting? how to do it ...
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4 votes
1 answer
169 views

Avocados from seed - inside house or polytunnel during germination?

I've got a windowsill with a number of avocados growing from seed (I'm in Rural Auckland - so US Hardiness zone 9b, heading towards winter) - A couple of my plants have just started to poke out the ...
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11 votes
2 answers
370 views

What is 'Hardening Off'?

Everywhere, when discussing moving a plant to a new location/climate, people mention hardening it off. What does this term mean?
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4 votes
1 answer
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How can I keep my persimmon tree warm?

I'm trying to grow my persimmon tree, but my country has a very cold weather in winter and a few months with above freezing daytime temperature in summer (USDA hardiness zone from 2 to 4), so I am ...
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5 votes
1 answer
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What is the ideal Daylight Time for Herbs, Tomatoes and Peppers?

I am looking into the development of a hydroponics system with artificial lighting and temperature. Is there a chart showing daylight time and type(Cloud, Direct, etc.) and temperatures between plants ...
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20 votes
1 answer
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Which tomatoes grow the best in high temperatures?

Which tomato varieties have the most heat tolerance? I live in a dry area (a steppe climate, or a Bsk climate with very hot summers), where the daytime highs are usually 89° F. or above in summer (up ...
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5 votes
1 answer
5k views

What is the heat tolerance of English Lavender?

I live in India (Bombay). It is very hot here in summers. I wish to grow Lavender on my balcony, however I am not sure if it will survive the heat. What is the heat tolerance level of English ...
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5 votes
3 answers
38k views

Why are the leaves of my Peace Lily wilted and black?

I recently bought a flowering house plant. I may have watered it too much, me thinks. Since my apartment gets little natural light, I put it outside on the patio the other day in direct sunlight, only ...
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3 votes
1 answer
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Optimal temperatures and light times for pepper plants

Day/night temperatures? How much light is too much? Right now I have an indoor pepper plant that is usually 80-90F during the day with 18 hours of light. I'm pretty sure I'm overdoing it as the ...
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3 votes
1 answer
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"Composting" Temperature(s)

I'm doing soil improvement work in Santa Fe, NM. I've dug down ~24" in an area ca. 2'x 6', creating an empty pit sort of like digging a grave and mixing back in the native dirt in ~4-6" layers with ...
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2 votes
1 answer
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How can I make sure my seedlings don't die in summer?

I did a bad thing: I planted several punnets of seedlings in mid-summer. It's been 5 days and many look like they're already dead. They are (or were) a small daisy-like ground cover. It's been hot ...
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10 votes
4 answers
15k views

What is the right time to water my lawn?

I finally own my home and this is my first spring. I have a decent front lawn that I want to keep as green as possible. I've always been told not to water in the day as it can burn the grass (as a ...
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10 votes
2 answers
10k views

How low (and for how long) does the temperature need to be before I need to worry about covering my outdoor vegetable garden?

I have an outdoor vegetable garden in South Florida. The garden consists of things like tomatoes, peppers, lettuce, peas, and squash. Everything was started from seed about 2 months ago. I don't have ...
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10 votes
3 answers
115 views

What is the effect of watering on the temperature of the garden?

We have a large garden (<2 acres) that we are growing for the Post Falls, ID. food bank. The farmer is supplying the water. We have 5 zones across the garden and move the sprinklers three times ...
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