10 votes
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Should containerized plants be periodically rotated relative to the sun?

Rotating some plants while in bud may cause flower stem weakening and bud drop, as in Schlumbergeras. but generally, if the light source tends to be one sided, it is a good idea to rotate the pot. You ...
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10 votes
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Does soil need sunlight?

No, provided the 'garden fabric' is water and air permeable and not thick plastic. Geotextile fabrics are commonly used in areas with existing planting, usually with some kind of decorative mulch on ...
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  • 128k
10 votes
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What is 'Etiolation'?

Etiolation is long, spindly growth caused by poor lighting conditions. Plants will tend to be more yellowish because of chlorophyll lack. You will see it at its worst when trying to greenhouse start ...
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  • 3,873
9 votes

How big a lemon tree can I grow indoors?

We get a lot of questions about member of the citrus family. Some varieties will flower and set fruit indoors. So, yes, you can grow citrus indoors but they are challenging to keep looking nice at ...
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  • 56k
8 votes

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

The cost effective solution for quite some time is and has been and probably will be to move further "towards the equator" and ship "away from the equator", or for a few things that don't ship well ...
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8 votes

Best mosquito repellent plant for a sunny terrace?

On the assumption you mean plants suitable for pots outdoors, lemon scented plants such as Citronella and Lemon Balm are good. Plants offered for sale under the name citronella vary - the one to look ...
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  • 128k
7 votes

What color should a greenhouse be?

Yes, the colour will block some light, but not too much. The only reason they sell these green plastic coverings on a frame is because they're thought to be more aesthetically pleasing than looking at ...
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7 votes
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Can I save this basil?

Does the basil on the left side have any chances of survival? It doesn't seem likely, but there is still some green on the leaves. The plant on the left side is too far gone. It will never fully ...
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7 votes
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How should I grow Moneymaker tomato plants in indoor containers?

Two in a 5 gallon pot is going to be pretty cramped. If they are going to live in the pot their whole lives they will choke each other and you'll potentially get less production than you would from a ...
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7 votes
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How should I take care of a Hyacinth bulb growing in a vase of water?

On the assumption you mean indoors in the sun, it would be best if it wasn't in full, hot sun all day because it might affect the roots - the glass may magnify the sun's rays and cause burning, and ...
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7 votes

Direct sunlight measuring device?

I don't know how accurate it would be, but if you download 'Google Earth' you can make it show you the passage of the sun and shadows based on it's rendering of buildings and trees. It would be ...
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7 votes
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Direct sunlight measuring device?

There are various devices on the market for measuring sunlight - the link below contains three or four different ones, although I can't speak for the accuracy of any of them. Although it's easy to ...
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7 votes
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What's the fastest way to dry peat before re-potting an overwatered succulent?

Well I wouldn't worry about drying it out first - simply tip it out of its pot, preferably wearing gloves, carefully, and with any luck, most of the wet soil will fall off immediately anyway. The ...
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7 votes
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Do young plants prefer their pots be rotated?

Do they prefer it? No, not really. Plants have evolved to grow and orient themselves to get the most light in any given conditions. It could even be argued that turning them away from this orientation ...
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6 votes

Is a screened in porch full sun or partial shade?

Well it's filtered sunlight, so that counts as partial or dappled shade, just about. There may be increased ambient light levels because of the reflected light off the pool, and possibly from the hard ...
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6 votes

Saving sun-scorched succulents

I'm sorry I don't know the cause of your damage, but I have a lot of experience with sedums, and can reassure you that a healthy plant can grow even if the top is damaged, dead, or broken off; and ...
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6 votes

Best mosquito repellent plant for a sunny terrace?

If you can manage to get a few marigolds, plant those. They thrive on a lot of sunshine, can be grown in pots, and are good at repelling mosquitoes and most other insect pests. The beautiful flowers ...
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6 votes

What's a good full-sun groundcover for Zone 6A?

I'm also in zone 6A (Massachusetts, USA), and have something that works perfectly for me. It is vinca, also called periwinkle. I think mine is vinca minor, but there are a number of varieties, so it ...
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6 votes

Will reflected light, from a mirror, work on plants?

It's not going to help. As the sun apparently moves across the sky you're going to have to track where the sun light falls into the room and position mirrors to focus the reflection on your plants. ...
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5 votes

Does soil need sunlight?

What kind of plants are you thinking of growing? I ask, because you mention keeping the weeds down in spring "before planting". If it is an annual bed or a vegetable bed that you will be replanting ...
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5 votes
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What color should a greenhouse be?

I received an answer from an OGrow representative. OGrow is a manufacturer of greenhouses. Me: Can we get an official response on how to choose between the green and clear coverings? I'm mainly ...
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  • 3,354
5 votes

What color should a greenhouse be?

Several of the answers here are incorrect. Green plastic absorbs green light or reflects it which is why it appears green. Green is chosen because if you want to reduce the light intensity to the ...
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5 votes
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Are clear or opaque tarps better for solarization?

Solarization: It is a practice that can kill most soil organisms, included the good ones. Solarization basically consists in the following: Release the soil. Remove big weeds and big rocks. Irrigate....
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5 votes
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How will indirect sunlight affect indoor tomatoes under grow lights?

You can't go wrong with extra light but the real problem is that the plants will grow towards the light. If you are able to turn the grow area once a week or so then yes, take advantage of the natural ...
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5 votes
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Does a luxmeter provide an accurate measurement of usable light?

Yes, low end (less than $100 US) lux meters will work for most measurements, and is a useful tool. Deep shade (too low for the average plant to thrive) is about 1,000 lux. Normal house lighting is ...
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5 votes
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Once the fava bean pods are formed, does the plant need a lot of sunshine to grow?

They like full sun, but don't like temperatures much above 75 deg F. If your temperatures are regularly much higher in full sun, it might be sensible to either move them where there's some protection ...
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5 votes
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Which direction should I face my garden?

There are different variables and it depends on what season but generally speaking to get the most light, assuming a rectangular garden. rows should run east to west and your taller plants should be ...
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5 votes
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Problem with pot roses

I'm presented with what looks like two completely opposite issues - the flower has suffered balling, and that is usually caused by damp cool conditions, in particular, rain, but the leaves appear to ...
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  • 128k
5 votes
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What is the effect of intense sunshine on vegetable plants?

Both peppers and tomatoes require as much sun and warmth as they can get, but with one caveat - if your overnight temperatures do not fall below 30 deg C, so that they have a sustained period where ...
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