Skip to main content
10 votes

Can I cut the top off a drooping aloe plant?

The damaged leaves will not heal, and the weakened narrow portion of stem will remain that way. It can grow from the end, though, and that can be healthy. It was obviously suffering from etiolation. I ...
J. Musser's user avatar
  • 51.8k
7 votes
Accepted

Does it make a pure utilitarian sense to have indoor plants for dark rooms solely for the purpose of purifying the air?

The air purifying meme is based on a study by Nasa in 1989 and has been enthusiastically promoted by anyone who likes or sells plants. Other studies have found that when you do not put the plants in ...
kevinskio's user avatar
  • 60.1k
5 votes

T5 AgroLED, Hortilux PowerVEG FS + UV, UV and Mold

Someone can answer the specific questions but normally led grow lights have no or minimal UV emission unless specifically added. The manufacturer of the second light says the UV is there to enhance ...
Graham Chiu's user avatar
  • 23.3k
5 votes

Can you have a shade-loving plant under full sun?

To understand the needs of any house plant, you need to take a closer look at its natural habitat. In our homes, we try to mimic those conditions as well as we can and breeders have been working hard ...
Stephie's user avatar
  • 16.6k
5 votes

Is this night lamp setup helpful or harmful for seedlings?

Does nothing, Vivid, for the plants. Plants need dark as well as light. These baby plants need acclimation when you want to transplant them elsewhere. I am unable to see your pots clearly, is this ...
stormy's user avatar
  • 40.5k
4 votes

Can plants have too much light, or do they need night/rest?

I would like to point out that plants do not have an "anaerobic" phase. Plants ALWAYS "breathe" O2. Just the net balance during the day is the production of O2 by photosynthesis because that only ...
Névermore's user avatar
4 votes

Are household LED bulbs suitable as supplemental light for plants?

You can grow plants with white LEDs. The bulbs sold at hardware stores are slightly more efficient than 23 watt CFLs, however they are less efficient than T5s or metal halide bulbs. I have tried LED ...
maurice's user avatar
  • 41
4 votes

Are household LED bulbs suitable as supplemental light for plants?

I use led lights for a planted fish tank, and all of the plants have very high light requirements, and it works fine. Mind you- each fixture (I have two of them), costs around 175.00 dollars, but if ...
Gregory Alexander's user avatar
4 votes

Solar driven LEDs to offset electricity for mass growing in a basement

To beat USD 0.109/kWH you'd have to create a very DIY system, possibly including auction lots of seconds (damaged goods) from eBay or a similar source of solar cells from China, and install them ...
Alex Nauda's user avatar
4 votes

Why aren't my hydroponic plants growing well?

In a hydroponic grow system you have to supply all the micronutrients that the plant would normally extract from the soil. Looks like you're only providing magnesium, and nothing else for the roots. ...
Graham Chiu's user avatar
  • 23.3k
4 votes
Accepted

What is light when it comes to plants?

With regard to plants, direct sunlight and daylight are two different things. Technically, all natural light is derived from the sun, but there are many plants which do not appreciate direct sunlight, ...
Bamboo's user avatar
  • 134k
4 votes

How to isolate light in indoor growing?

Typical approach is to simply choose a room (closet, in most houses, or a basement room) without windows. Walls are reliably opaque. A freestanding "closet" would be another approach. In plant resarch ...
Ecnerwal's user avatar
  • 24.9k
4 votes

Do indoor plants go dormant in winter?

Indoor plants, plants in green houses get confused big time come winters. Some plants (not the ones you have) actually NEED to go dormant for their health. Indoors during the winter is tough because ...
stormy's user avatar
  • 40.5k
4 votes
Accepted

How much light does a scented oak fern need?

There is a misconception about ferns as houseplants, which is that they like very low light conditions. Unfortunately, most don't - in their natural habitat outdoors, they may grow in shadier spots, ...
Bamboo's user avatar
  • 134k
4 votes

Do olives need darkness? How much?

I think the jury's still out for a final verdict on the effect of light pollution on plants. In the UK, many of our street lamps have been replaced with LED lighting - research is ongoing in the ...
Bamboo's user avatar
  • 134k
4 votes

Why do plants need water?

You're definitely missing something; your information is incomplete. You've mentioned evaporation (from the soil, presumably) but not transpiration. Plants need water, it's the stuff of life - they ...
Bamboo's user avatar
  • 134k
3 votes
Accepted

Have fluorescent lights in both rooms. How to protect Dumb Cane/Dieffenbachia?

Dieffenbachia will grow under any kind of light. There is no need to protect it from interior light even if it is on 24 hours a day. See my answer here. I believe when you write about "tubelight" ...
kevinskio's user avatar
  • 60.1k
3 votes
Accepted

How to isolate light in indoor growing?

The best curtain is made from those heavy contractor bags. Cut open and duct taped into what ever size you need. Make it at least a foot longer and a few feet wider for the space to block any cracks ...
stormy's user avatar
  • 40.5k
3 votes

Why aren't my hydroponic plants growing well?

I haven't done hydroponic gardening (and I don't know a terrible lot about hydroponics specifically), but from my observations of hydroponic fertilizer, it's usually very high in potassium compared to ...
Brōtsyorfuzthrāx's user avatar
3 votes

Are household LED bulbs suitable as supplemental light for plants?

I have multiple 28w LED "grow" lights. They work wonderfully well to keep leafy-green and succulent house plants robust in -very- low light situations. Plants used to die in the same locations. ...
Franklin Pierce's user avatar
3 votes

Are household LED bulbs suitable as supplemental light for plants?

It seems like CFLs or fluorescent tubes would be a better option. That's what most people use and they provide the broadband blue-violet and UV light that LEDs can't provide.
mauricem00's user avatar
3 votes

Can plants have too much light, or do they need night/rest?

I've had plants of all types my entire life.I honestly believe all "living" things need a rest. Just like the change in seasons, everything gets that growth spurt in the spring after that long rest.
Donna White's user avatar
3 votes

What is the limiting factor in plants growth and production speed?

Good discussion but I find it interesting that none has mentioned the pH as one of the most important limiting factors. The availability of inorganic carbon for photosynthesis tends to increase with ...
vkn's user avatar
  • 51
3 votes

Edible, indoor, winter plants. What lights? (and other advice)

A lot of light is required for plants to produce food. You will find lights at aquarium web sites . I think it would require a few to several hundred dollars for lights for a 10 square foot shelf.
blacksmith37's user avatar
  • 8,774
3 votes

Do olives need darkness? How much?

Night lights are not lights. These are so low in power (compared to sun) that they should have no effect (but on nocturnal insects). Especially if it is indirect light or street lighting. Look at ...
Giacomo Catenazzi's user avatar
3 votes
Accepted

Is this night lamp setup helpful or harmful for seedlings?

As mentioned by stormy, your table lamp does nothing for the plants, but it does illuminate the space at night so you can see your seedlings. If you want to extend the “daylight” hours - so your ...
andrewbuilder's user avatar
3 votes
Accepted

Do plants react differently to artificial light than to sunlight?

Lots of plants are grown under artificial lighting. Plants only need light to power photosynthesis so as long as you provide the correct wavelengths it doesn't really matter to them. Sunflowers are ...
Graham Chiu's user avatar
  • 23.3k
3 votes

What kind of grow lights do I need for a butternut squash?

Bare minimum grow lights are T-5s; fluorescents, each bulb (4 bulbs) gives 54 watts each and uses a good old boring 110 electrical source, a wall plug in (U.S.) Least expensive in my experience. ...
stormy's user avatar
  • 40.5k

Only top scored, non community-wiki answers of a minimum length are eligible