Questions tagged [light]
Illumination, required for photosynthesis. Use this tag for all questions about the required light levels for your plants. For questions specifically about artificial lights use the [led] or [grow-lamp] tags. For questions directly about the Sun and its effects in different conditions on plants use the [sunlight] tag.
134 questions
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Why are my Aglaonema white joy leaves turning yellow?
I got my plant 1 week ago and all the leaves were white and green I noticed they very quickly started turning yellow with brown spots and drooping.
The instructions with the plant are:
Indirect ...
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Are artificial lights at night bad for Venus flytraps?
I am growing a Venus flytrap (Dionaea muscipula) on a porch. During daytime, the plant receives strong sunlight. When it gets dark, an 800 lumens warm white LED light bulb illuminates the porch. This ...
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Greenhouse - Plastic Greenhouse Covering
A lot of small greenhouses seem to have this green/clear mesh plastic covering on them like the picture below and I wonder how these compare with similar houses that don't have the plastic weaving in ...
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Grow lights for indoor houseplants in a low-light living room
I have several houseplants situated on shelves in my ground-floor living room. The light from the window is quite diffuse and doesn’t reach them well. Considering winter and generally bad weather, ...
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Grow light recommendations for money-plant on 5ft high trellis in a shaded window
Context: My money plant is not growing too well on this trellis. The leaves are yellowing and falling-off too often and the growth is very slow (compared to other money plants which are lying in a ...
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Mounting a board/sign to a tree without harming it
I'm looking for suggestions on mounting a board vertically to a tree but without drilling into the tree or harming it.
I was looking for some type of bracket or strap that would withstand multiple ...
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Seeking Recommendations for a More Powerful Desk Light
I'm looking for a new grow light for my plants. The current lamp I have is too short in width, so it doesn't cover all the plants evenly. While it provides up to 20k lux at the center and based on a ...
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Will my plants get enough sun in this window?
I'm planning on putting plants in this room next to the window but I'm not sure if they get enough sun here (for reference the plants I have are a few cacti, an echeveria, a house leek, a small bonsai ...
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My shady and rather cool garden is always behind those nearby. Could starting seedlings under grow lights help?
I grow veg in southern England, starting from seed in a south-east-facing windowsill. I already use a heated propagator for my seeds as my house isn't very warm in early spring.
The garden has mature ...
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Does it make a pure utilitarian sense to have indoor plants for dark rooms solely for the purpose of purifying the air?
My goal is not to decorate the interior, but simply to purify the air. I wonder if having plants is the cheapest option to purify the air.
My concerns are as follows:
My bedroom is rarely lit, and ...
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Looking for an extremely shade-tolerant decorative plant
direct sun light: 0h/day
indirect sunlight: quite dim, the window is 10 meters away
temperature: never freezing, never too hot
We tried a Ficus tree (was 50cm and in good health when moved there, ...
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Will my tobacco plant survive indoors under this grow light?
Hi I'm trying to grow tobacco indoors but they have not come up yet. I'm currently on day 2. I'm using a clip on 40w LED grow light. Will this be enough for them to grow? I have a link of the model on ...
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Is this grow light (GE BR30) harmful to your eyes?
Can the GE BR30 LED grow light could pose harm to one's eyes, especially if they are used in somewhere like a high bedroom shelf where the bulb itself is visible from below?
Here is an image of the ...
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How does plant size and shape change with different levels of light?
For a plant species that is described as "full sun to full shade", what differences might I expect to see if I plant it in full sun vs full shade? If you need a specific example plant, I'm ...
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How can I diffuse sunlight for my pin-stripe calathea?
I've read that calathea plants require indirect sunlight in order to thrive. I'm currently keeping my two calathea about 8 feet away from a window, where I know the direct light won't hit them. But ...
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IOT Precision farming/agriculture [closed]
Note I have asked also this in Earth science using agriculture Tag and here also because those are the agriculture communities as to my knowledge in stack exchange
Before asking my agriculture/farming ...
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Bird of paradise leaves shriveling, how can I fix it?
The leaves on this Bird of Paradise (Strelitzia Nicolai/banana plant) are folding onto themselves and browning at the edges. I'm struggling to figure out why this is happening.
It might be due to the ...
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Why are my tradescantia nanouk's leaves brown?
I've had this tradescantia nanouk for less than two weeks and I'm already getting several browning leaves. From what I've read, it seems this can be either from lack of humidity or too much light, so ...
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Is my peace lily's lighting ok?
I got this beautiful peace lily sensation about five weeks ago. I just discovered the yellow leaf and I'd like to troubleshoot this before it gets worse. I suspect it's due to lighting but would ...
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Indoor Growing - Light Selection
I have undercabinet lighting using f8t5/cw fluorescent bulbs. I want to replace these with lights that will allow small plants (ex. basil, oregano, mint, and other low maintenance herbs) to grow ...
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What are the best parameters of LED lights for Phalaenopsis orchids
I am planning to use LED lights for growing Phalaenopsis orchids. What are the parameters I should choose in terms of
light strength
color
duration?
There is very minimal sunlight, if any at all.
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What's the difference between a regular white light bulb and a grow light?
I know that LED bulbs can vary along two important dimensions, lumens and "temperature." In particular, the temperature is important to make sure the plant gets the frequencies of light it ...
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How much light does cross hatched covering of a polytunnel allow?
I've bought a (cheap) polytunnel with a covering, with a thread that forms roughly 1cm squares cross hatched to presumably give it some strength. Also the plastic is coloured green. I installed it in ...
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How to help seedlings recover from tip burn
I germinated some seeds and I had the seedlings under a two new 40w LED grow light for a few weeks. I'm used to keeping florescent lights very close to the plants, but apparently this LED light is ...
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Question about illumination for moss
I'm about to open my store and I built my logo with moss in a coconut fiber board (sticking little parts of moss with gardening wire to the board).
I wanna hang it on the wall and direct a light ...
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Is direct sunlight okay for houseplants in Winter?
Ignoring plants that love or require direct sunlight, my understanding is that generally plants don't like it too much (leading to sunburn) and rather prefer bright indirect or filtered light. I did ...
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Grow Light - Does power line flicker affect plants?
I prefer to build my own grow lights since I can have full control over the output. The parts will be arriving late unfortunately, and the suspicious $5 50W (30W as measured) grow light (that I ...
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Would an electric light help an Aloe vera plant?
I have an Aloe vera plant in a large pot. It was doing well but when I moved homes I can't keep it as much sun light. It's getting a bit droopy and has brown parts. I'm wondering if a lamp would help ...
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Removing crumpled leaves from over exposure to light
I am currently preparing the seedlings for next springs growing in my garden. I have created my own green house - in theory with ideal conditions (full spectrum lights, high humidity, 30+°C all the ...
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Keeping plants in the dark for 2 weeks?
I was wondering if my houseplants would be able to survive in darkness for 2 weeks? They are a variety of species, including an orchid, a dracaena, some cacti, some succulents and a spider plant.
...
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What does this plant need?
I spontaneously adopted this succulent from a shop.
I've never grown a plant before.
I learned what I could from videos and people and the internet.
My request is for information, help me understand ...
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what is the minimum lumens of light required to grow a single tomato plant and similar flowering plants Indoors?
I am planning to grow a single tomato plant Indoors. I am doing research on what grow light to invest on as a beginner. I want to know how many lumens does a tomato plant requires?
If I want to grow ...
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What kinds of fruits and vegetables could I plant here?
I am thinking of growing a garden in the area between the two fences in the photo. What kinds of fruits and vegetables would do well? It is not full sun, but by 10am most of the area has sun. If you ...
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What's the difference between fluorescent and LED "grow lamps"?
I've been studying a bit on how to take care of my Ming Aralia inside my office, and some sources mainly mention fluorescent lamps and how they should be placed very near to the leaves, almost ...
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What is the best light timing for an indoor ficus bonsai in both the winter and summer?
I recently got an indoor ficus bonsai and it's doing well. I bought a grow light for it and I put it on a timer, but I'm not sure what the best light timing is for the plant. I'm having trouble ...
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Is this bonsai in trouble?
This is a bonsai fig tree, which I bought maybe two months ago. As you can see in this photo, it's losing leaves at a good clip:
However, a closer look shows that it's also sending up branch ...
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LED grow lights in living space cause eye damage?
I'm setting up a 3'x 6' space in my living room to grow citrus trees. I'd like them to be able to fruit year-round.
I'm trying to decide between a few 200-400 watt CFL grow lights or LEDs.
LEDs are ...
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Lighting for indoor citrus to produce full fruit
I'm getting a few different citrus trees I'd like to grow against the wall in my living room. I currently have a hydroponic veggie setup so I'm not a total beginner.
I was wondering what lighting I ...
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Full spectrum LED strips tape for growing succulents and indoor plants
I'm looking at modifying some built in shelving that I have in my house with some LED strips to help my succulents and indoor plants. Due to the fixed nature of the shelves and the relatively narrow ...
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Best wavelength mix for an indoor LED grow light used to grow basil
I want to grow basil. A lot of it.
Unfortunately the winter is coming, and my plants won't be able to survive outdoors. Beeing an electronics engineer, i decided to DIY an indoor growbox, so that ...
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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 wait for cotyledons to show before exposing seedling to light?
I used to exclusively use the paper towel method for germinating seeds. Now I am trying soil blocks (I found some seeds germinate better if I don't cover them).
And I was wondering when should I take ...
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Is too much sun better than full shade for Haworthias?
I recently had several scale-aphids attacks. It involves many of the shaded Haworthias. Systemic insecticides, soap-water blasting, removing and cleaning rotted roots and affected areas, weak bleach ...
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Do herbs & spices need dark time, in order to develop flavors and nutrients?
When you grow cannabis indoor, it is considered beneficial, to have lights turned on up to 24h / day, during the "grow" phase. While this would prevent blooming, it is beneficial for building plant ...
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Diagnosing yellow spots on my cactus growing under artificial light
I have owned a Mammillaria Nejapensis for the last few months which began showing unhealthy yellow spots a few weeks back and seems to be getting progressively worse. A photo of the cactus is attached....
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How much sunlight is required to grow a coffee plant indoors?
I’m trying to grow some coffee plants inside and I have no good place where they get all their needs so I want to start with a blank slate and control everything myself.
I know coffee plants like ...
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Co2 enrichment with exhale bags
I’m intending to try co2 enrichment with Exhale bags.
And from reading on the co2 enrichment I understood that photosynthesis does not play a role during night time and the plant actually emits co2.
...
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How to create an indoor gardening?
I'm looking to build an indoor garden to grow lettuce, basil, maybe tomatoes etc..
I have numerous questions :
Are smart gardens a viable options ? (In terms of electricity cost and harvest ...
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San Pedro tipped over and broke
My San Pedro has been growing quite a lot the past 2 years, but very thin. It was windy the other day and found him tipped over. Not completely broke in half, only half way. So I tipped him back right ...
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Heat and light a 6’x7’ room for plants
I have a 6’ x 7’ room (1.8/2.1 m) that I want to heat and light to bring my outdoor potted plants in for winter. How much light do I need? Will a 150 watt r40 flood light do the trick? Hibiscus mainly....
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