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12 votes
Accepted

What does ash do to the PH of soil?

The carbonates and oxides that are left by the burning of wood can be used to neutralise acidic soil as wood ash is highly basic. It will contain all the elements that were present in the wood except ...
9 votes

What does ash do to the PH of soil?

Assuming this is wood ash from a wood burning stove. As a rule of thumb, wood ash contains 15-30% Calcium Carbonate (Lime), 3-8% Potassium (Carbonate and other salts), 1-3% Phosphorus and other trace ...
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8 votes
Accepted

Is Coca Cola bad for Nightshades and curcubits?

Fertilizer is commonly rated with an NPK ratio. The P stands for phosphorus (technically, P2O5), and it is the amount (percent by weight) of the fertilizer. So in a bag of fertilizer that is rated 4-...
  • 1,585
7 votes

How can I measure the pH of my soil?

Measuring the pH of soil is cheap and super easy (I do this often). Get a (plastic) bowl. Put a sample of soil in it. Add distilled (not rain or tap) water and mix it to the consistency of a milk ...
  • 1,585
7 votes

How can I measure the pH of my soil?

The best way is to get a soil test. If you can find a COOPERATIVE EXTENSION SERVICE via the closest University, it is cheap and possibly free. Otherwise there are cheap tests like the ones used for ...
  • 39.9k
7 votes
Accepted

Help me decide in a location for my raised bed garden

Full sun - most vegetables like as much sun as possible, although in very, very hot countries, some shade from the midday sun may be beneficial.The berries falling doesn't matter either way, but they'...
  • 130k
7 votes

Developing new soil for gardening

There's no particular reason to think the nutrient level would be high - the only way to know is to do a soil test - contact your local agricultural extension office and get a soil test kit, follow ...
  • 19.3k
6 votes

Developing new soil for gardening

If you are gardening for fun not for profit, its not that important to focus that much on "PH". Your land is unique. You can't come up with the perfect solution the first year. It will take time ...
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6 votes
Accepted

What makes Ammonium Sulfate a soil acidifier but not Potassium Sulfate

Good question, I understand the confusion about sulphur and sulphate. But chemically they are different and have different chemical reactions. Even different sulphate salts do not react the same, and ...
  • 12.9k
5 votes

Blueberries in concrete block bed

Standard recommendation for 50 years or more (I have old books) has been to line concrete beds that will be used for acid-loving plants. In days of yore that would have been tar/asphalt type material -...
  • 19.3k
5 votes

Is it possible to graft miracle fruit to a rootstock that tolerates alkaline soil?

Miracle fruit (Synsepalum dulcificum) belongs to the Sapotaceae family, and you'd need host roots from a plant within that family, though whether there are any suitable or compatible isn't something I ...
  • 130k
5 votes
Accepted

Is it possible to modify soil pH with plants?

In short, no, it isn't possible to alter your soil's ph by growing particular plants - if your soil is chalky, choose alkaline loving plants to grow in it and avoid acid lovers, or grow those in pots ...
  • 130k
4 votes

Are there plants that add acid to soil naturally?

About the only thing that will acidify soil over a period of years, and keep it so, are certain trees, mostly conifers, though it varies between species. The variation is accounted for by the presence ...
  • 130k
4 votes
Accepted

Mistake - should have used ericaceous compost

Well, if you only did it yesterday, it's not a problem - what could be a major problem is surrounding the rootball with manure. Go and get some ericaceous compost if you don't have any. Turn the ...
  • 130k
4 votes
Accepted

Planting moderately acidophilic plant under the rain downspout

This is an easy one. Downspouts are usually next to concrete foundations and having the water flowing over a concrete shield...alkaline. The lime in concrete affects the soil near the foundation ...
  • 39.9k
4 votes
Accepted

What are the cons of using aluminum sulfate and elemental sulfur as soil acidifiers?

Lowering soil ph isn't a one off treatment - it needs to be ongoing, with frequent soil tests to check its not getting too low. Sulphur is the safest from a planting point of view, but takes longer to ...
  • 130k
4 votes
Accepted

Plants for under blue spruce tree

A chunk of my garden is acidic, mostly dry shade, so here's what does well for me: Groundcovers: Lingonberries (Vaccinium vitis-idaea) - may require more water than you have under the trees, ...
  • 14.4k
4 votes

Lowering Soil pH with Diluted Sulphuric Acid

IMO the only place 93% sulphuric acid belongs is in a chemistry lab or an industrial plant. It is a very hazardous material. Using sulphuric acid directly at any concentration is probably a bad idea, ...
  • 11.3k
4 votes

What makes Ammonium Sulfate a soil acidifier but not Potassium Sulfate

Ammonium sulfate is a strong acid and a weak base , in very basic terms. "strong " means fully ionized ; "weak" means partially ionized so not providing as much acid (H) or base (...
  • 7,961
3 votes

Can I ignore soil pH and just give blueberries chelated iron?

The crux is that its not just about the amount of iron in the soil. It has to be in a form that the plants can absorb. Plants mainly acquire Fe from the rhizosphere. Although Fe is one of the ...
  • 509
3 votes

Can I ignore soil pH and just give blueberries chelated iron?

You could apply a foliar spray of chelated iron once or twice a season, but that's not fixing the problem which is the soil pH is not allowing the plant to access the nutrients in the correct ...
3 votes

Developing new soil for gardening

I can offer up two suggestions to enrich your soil. The first option is to mix horse manure and chicken manure (3:1) in your existing soil. I use store bought manure but since you are planning to use ...
  • 8,217
3 votes
Accepted

Can I measure chemical elements in soil myself?

Okay to get right to it, no, most of those listed nutrients aren't practical to test for at home. That said, you can get test kits, for basic info about levels of N,P,K, and pH, but they will not ...
  • 51.5k
3 votes

Tomato plant discolored and dried out

One of the most common reasons of tomato plants shriveling up are fungal diseases. The spores live in the topsoil and can get on & infect the leaves by falling raindrops. (Sounds complicated, ...
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3 votes
Accepted

Does aerating water to raise the pH in nutrient solutions work well?

Carbon dioxide easily dissolves in water, creating carbonic acid: H2O + CO2 <===> H2CO3. This will soon reverse the effect of aeration, relowering the pH. So it's best to wait until the water pH is ...
  • 51.5k
3 votes

Are there plants that add acid to soil naturally?

Acidic soils are great for potatoes, blueberries, hydrangea...but most vegetables do better in more neutral soils. There are no plants that actually DECREASE the pH of the soil PER SE. Whenever ...
  • 39.9k
3 votes
Accepted

How to pH test mulch and compost?

Take a handful and mix it in a cup of distilled water or some other low mineral water. Stir and let it settle, then check pH of the water. Quantities are not critical. I use bromthymol blue—it is a ...
  • 7,961
3 votes

What would cause the pH of a hydroponic system to go up when the lights go off?

Pretty cool system you have there, it looks very sophisticated! You say that the lights go off at midnight and back on at 6 am. You can indeed see a bit of rise in pH during that time, but I see more ...
  • 12.9k
3 votes

What element is needed to turn Hydrangea flowers blue?

You want to acidify your soil, so sulfur because that is used to make sulfuric acid.
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