25 votes
Accepted

What is a 'Perched Water Table'?

Well, basically, the perched table is the saturation point, where the capillary action in the soil is canceled out by the force of gravity. Every type of growing media has a different perched table. ...
  • 51.5k
14 votes
Accepted

Can I use "distilled" water to water plants?

Provided that you are feeding the soil/plants the macro and micro nutrients they need there shouldn't be an issue. Epsom salt (1tbsp/gallon) every now and then helps with some of the micro nutrients. ...
12 votes
Accepted

Plant only flowers after rain, and not from being watered. What plant is it?

This plant is Zephyranthes carinata, a bulb with the common name Rain Lily. There are lots of hybrids these days, but the reason they're called rain lilies is because they flower after rain. Some only ...
  • 130k
10 votes
Accepted

What unclean water can I give to my plants?

If the greywater is from food preparation, it's fine to use if it doesn't contain salt, oil, or big pieces of food. I'd use a strainer, to get all the pieces. I think the water from the food ...
  • 51.5k
10 votes

Can I use swimming pool water to water plants and vegetables?

You should make sure, before you use the water, that no chemicals have been added for a week (some say half a week), and assuming you've only used chlorine, it should be down to 1 part per million ...
  • 130k
10 votes
Accepted

What are these tall, tree-like shrubs and how often should I water them?

Judging by the new growth being red, I'd say these were Photinia fraserii 'Red Robin'. I can't tell if they're pleached or not, can't see any framework within the foliage, so its possible they're just ...
  • 130k
10 votes
Accepted

Can I use water from the clothes dryer to water plants?

It's not advisable to use this water on potted plants because of the risk of contaminants from detergent and fabric conditioners being present, but many people do spread it round the garden for plants ...
  • 130k
10 votes
Accepted

Why do my Cherry tomatoes split as they ripen?

Small fruiting tomatoes tend to be a lot juicier (that is ratio of meaty pulp to juice) than medium or large fruiting. Tomato produces a skin of a certain size for the number of fruits it has, then as ...
10 votes

Why do my Cherry tomatoes split as they ripen?

There are two main causes of fruit split - the first is irregular watering. Once tomatoes have fruitlets, and especially as they start to get bigger and ripen, its critical to water sufficiently every ...
  • 130k
9 votes
Accepted

Is it ok to water plants at noon (peak sunlight)?

The optimum time to water plants is in the morning, before any heat builds up - this gives time for the water to penetrate and be taken up so the plants are already well hydrated. Watering in noon day ...
  • 130k
9 votes
Accepted

Tillandsia (air plants) Turning Black and Dying After Watering

Your tillandsia has been damaged by using chlorinated water. You can dechlorinate water by leaving it to stand for 24 hours but if the municipal authority uses chloramines instead, then you will have ...
9 votes
Accepted

How do I grow Wasabi?

Contrary to what you often see, Wasabi can be grown in moist, but not submerged, soil. You'll do best starting with fresh, viable seeds. Here's a few points on preferred conditions in soil growing (...
  • 51.5k
8 votes

Does eating fruits and vegetables watered with greywater affect your health?

I have some experience watering with grey-water collected directly from our household kitchen sink that I'd like to share. First, I'd like to comment that the bacteria from the grey-water should not ...
8 votes
Accepted

Can drained water from potted plants be used again to water another house plant?

Well, the correct way to conserve water is to watch your water, and make sure you don't have excess drainage. This of course takes time and experience. Till then, use measuring cups, or watering jugs ...
8 votes

Can drained water from potted plants be used again to water another house plant?

I haven't found any good reference sources, so this is just my personal experience. It ended up being too long for a comment, so I hope it's appropriate as an answer. I do this frequently, with both ...
8 votes

Buds don't blossom on Chilli plant ( bud drop )

I think you overwater the chilli plant. The leaves are not very healthy. Chilli likes also dry climate, so try to water a lot less. One or twice a week. I would also not put so much fertiliser. Once ...
8 votes

Why are my anthurium leaves rapidly turning yellow?

These plants like bright but diffuse light ( not direct sunlight ) and moist oxygenated soil but you've already identified that it has been sitting in stagnant deoxygenated water. This has lead to ...
7 votes
Accepted

How do I water a desk plant at my office without making a mess?

I assume that you yourself will be the only one watering the plant. Most people use a saucer under the pot (without gravel) and avoid too much water build up by watering the plant only as needed. If ...
  • 935
7 votes
Accepted

Is it okay to use left-over pasta water to water plants, including edibles?

If you're having a drought, I'd say you'll be fine using it for a short period of time. You mentioned adding salt; this will build up in containers every day you use it, and eventually will harm the ...
  • 51.5k
7 votes

Is it okay to use left-over pasta water to water plants, including edibles?

I wouldn't recommend it long term but in the short term, it should be fine EXCEPT it's salted. Cook your pasta without salt while there's a drought and then use the water. It doesn't really need salt ...
  • 130k
7 votes
Accepted

How much water should I give a mung bean each day?

It's dangerous to use a set amount of water per day, when watering potted plants. This is because they may use different quantities as they get older, and also because it is very easy to overwater, ...
  • 51.5k
7 votes

How to set up a very long (1600 ft) drip irrigation system?

Generically, go with large diameter pipe. Specifically, you'd need to run calculations based on water flow rate, pipe size, and dynamic head (pressure loss due to flow rate) against the available ...
  • 19.3k
7 votes

How often should I water an Amaryllis plant?

How much to water is a complex question where you have to evaluate how much light is present, the relative humidity and the water needs of the plant. Bulbs do not normally like wet feet. The ...
  • 56.6k
7 votes
Accepted

Aloe is drooping, is it ok?

It's hard to tell from the photos but the leaves on your problematic aloe seem different to your "other aloe". Perhaps they're different species and thus will have different different habits ie. not ...
  • 1,023
7 votes

Aloe is drooping, is it ok?

You should definitely re-pot the three "babies" in separate pots, to get them away from the old dead material which is a constant risk for attracting bugs, fungus diseases, etc. Possibly they are not ...
  • 11.3k
7 votes
Accepted

Should I heat water first and let it cool before watering in winter?

Very cold water can shock some plants, especially if the surrounding temperature is warm. You didn't mention where you are, but in most large cities, water has at least some chlorine in it, which is a ...
  • 311
7 votes

Why shouldn't I water a Blue Spruce tree during and after transplanting it?

In my 25 years as a landscaper in the Pacific Northwest, I have never heard of such a treatment. With that said, the only thinking I can come up with is that the arborist feels that by watering in ...
  • 2,492
7 votes

Why do some people use ice cubes at the roots of outdoor plants to help them flower?

In my opinion, no, its one of those faddy things that gets bandied about, in the same class as coffee grounds being great for everything plantwise, and water droplets causing sunburn on all plant ...
  • 130k
7 votes

Self watering pot with no hole

Unglazed terracotta is a porous material so water can pass through it, albeit slowly. This can be a very effective way of delivering water without drowning the plant. For bonsai, overwatering is quite ...

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