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Questions tagged [ph]

pH is a numeric measure of how acidic or alkaline the soil or other growing medium is. Acidic soils have low pH and alkaline soils have high pH. Use this tag for questions about measuring or adjusting the pH of your soil.

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

I am currently growing lettuce in a hydroponics system that I'm developing. The system has continuous pH monitoring and I recently noticed that when the lights go off at night the pH seems to increase....
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1answer
25 views

Do Citrus potted plants need acidic soil

Does Citrus Plants growing in pots, need slightly acidic soil? I am thinking of the jasmine plant that requires, 1 teaspoon of vinegar, mixed with water, approx every 15 days, particularly during ...
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2answers
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Black stem tips in a blueberry plant

I have a blueberry plant that is about 4 months old and a couple of weeks ago I noticed that the tips of the two main stems (the ones that the plant came with when I bought it), and some leaves are ...
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2answers
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Acidifying water for acid-loving seedlings: Calculating the best bang-for-the-buck

I have water that is at a pH of 8.0. I want to acidify the water to a pH of 4.0 (for the purpose of watering acid-loving seedlings). I have two products that I can use to acidify the water: Lemon ...
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4answers
318 views

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

I have a slightly high pH, 7.2. Nothing bad but I would like to bring it down a little. I was looking at two elements/products whatever you want to call them. One was Aluminum Sulfate and the other ...
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1answer
61 views

Planting moderately acidophilic plant under the rain downspout

I bought a couple of slightly acidophilic plants, and my soil is neutral, and also I don't like to use any chemicals. Would it be a good idea to plant them at the base of rain downspout? (The plants ...
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0answers
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Blueberry bush not looking very lively

I have been growing a blueberry bushes and am not sure that I am having much success. The plant doesn't appear to have done much since it was planted and just appears to be slowly loosing leaves and ...
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3answers
107 views

Increase pH value of already planted soil in a balcony flower box?

Two days ago I had soil of pH 5.5. I impatiently planted my lavender and now I'm worried because lavender needs a pH of 6.5 to 7.5. I did mix the soil with about 1/4 (volume) of quartz sand and some ...
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1answer
73 views

Is it possible to modify soil pH with plants?

I have a very chalky soil and I'd like to decrease its pH. Are there plants that can effectively help correct the soil pH permanently?
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1answer
181 views

How to pH test mulch and compost?

I've used soil pH test kits in the past where you mix the soil with a solution and look for a color change. This works OK for dirt, but sometimes I'd like to know what the final pH of my planting mix ...
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2answers
253 views

Blueberries in concrete block bed

I am getting ready to upgrade my aging and rotting wooden raised beds to ones made from 8x8x16 hollow concrete block (Concrete Masonry Units). As I understand it, the lime in the concrete can leach ...
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1answer
93 views

Mistake - should have used ericaceous compost

I repotted a camellia yesterday but used multi purpose compost by mistake. That compost is on the bottom, but I used rotted manure around the root ball. What should I do?
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4answers
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Developing new soil for gardening

We recently purchased some land that is on the bench of the mountains covered in juniper trees and has a PH of between 7 and 8. We have cleared a good size area and I would like to amend the soil for ...
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1answer
120 views

Aquaponic ph level for different plants

I'm wondering how much does water ph level matter for plant healthy growth as an aquaponic system would presumably have one ph level for all growing plants and as far as I understand and find on the ...
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1answer
1k views

What type of soil do cacti prefer? (acidic or alkaline)

I have done some research and found some sites suggesting alkaline soil while others say that alkaline soil will inhibit the growth of a cactus.
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1answer
611 views

Why do the leaves on my Meyer lemon have blotchy yellow areas?

I have a Meyer lemon that I purchased a few months ago. I potted it into a self watering container with some potting mix mixed with some peat. It's flowering and small fruit are forming but the leaves ...
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1answer
142 views

Is Coca Cola bad for Nightshades and curcubits?

A bit of a whimsical question, but I'm curious nonetheless. Phosphoric acid (E338) - the stuff used to make coca cola tart/sour and useable as a cleaner is also used commercially to make soil more ...
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2answers
1k views

How can I measure the pH of my soil?

I was told to measure the pH of my soil to help identify some of the symptoms on my vegetable plants. Does anyone have recommendations of a device I can purchase to measure soil pH?
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2answers
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How crucial is it to measure pH of hydroponic growth solution for leafy greens?

I was told I need to continuously measure the pH of my growth solution and modify it if it exceeds a certain range. Is it really that crucial? I mean no one pays attention to pH of soil in a pot... ...
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2answers
617 views

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

As Why do blueberries need acidic soil? points out, it seems that iron is really the biggest nutrient to suffer in alkaline conditions. Even an answer there, despite a nice emphasis on the broader ...
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2answers
163 views

Help me decide in a location for my raised bed garden

I'm building a 6x3 raised bed in my brooklyn ny backyard however, i wanted to know if i set it up at the left side it would be half under a mulberry/blackberry tree and the right side it would be in ...
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2answers
3k views

What does ash do to the PH of soil?

I've read that ash changes the PH of soil, so I was wondering how it changes the PH.
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1answer
262 views

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

I am interested in purchasing a miracle fruit (Synsepalum dulcificum) plant and would love to plant it in the ground. However, one of the main issues is that miracle fruit likes extremely acidic ...
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3answers
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Are there plants that add acid to soil naturally?

I'm curious if there are any plants that might add acid to their soil so that they might work well in a permaculture setting, you might be able to plant X, Y or Z near a blueberry bush to eliminate ...
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1answer
402 views

How do lots of trees affect the soil pH?

Does planting lots of trees in a treeless area generally make the soil more acidic or more alkaline? I've read that it does one or the other (and the change in the water table, resulting from the ...
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1answer
512 views

Jubilee blueberry's leaves are browning

I potted a Jubilee Blueberry plant 2 weeks ago. The leaves have started to brown this week. The same thing happened to my Spartan Blueberry plant. That one completely browned up and died. How do I ...
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1answer
144 views

Can I measure chemical elements in soil myself?

What sort of equipment would one need to ensure that plant soil contains the right concentration of the 13 mineral nutrients necessary for plant growth? Specifically, can this be measured in real-time ...
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1answer
137 views

Tomato plant discolored and dried out

I have a home garden with tomatoes and peppers. The peppers grow great every year, but often the tomatoes end up discolored with dried out leaves. I recently did a Manutec pH test on the soil and ...
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1answer
779 views

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

As anyone who has ever had to tend to a pool painfully discovered, aerating water causes the oxygen to react with something and raise the pH. From what I have read it converts contents of the water ...
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1answer
667 views

What type of tester works best for measuring soil pH? [duplicate]

I want to measure the pH of soil in my potted plants (especially for the dwarf citrus trees that I just bought). I've seen many different options: expensive laboratory-grade meters, cheap digital ...