Gardening and Landscaping Stack Exchange
Gardening and Landscaping Stack Exchange

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.

Related tags:

  • for other questions about changing the soil composition.

External links:

  • Wikipedia on pH
55 questions
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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 that are considered micro nutrients for some…
Mantriur
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Soil TestResults show low P and high PH, vegetables are already in, what should I do? Help!

I filled 220sq feet of raised beds earlier this spring with 10inches of soil comprised of 5yds organic compost and 2 yds premium screen top soil (about 50/50 by mass). The beds are open on the bottom. I amended this mix with the recommend dose of…
AJackson
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How much peat moss would I need to lower the ph of my soil

I had my soil tested. The ph is 8.2. What is the best product to lower the ph. I’m reading about sulfur, aluminum sulfate and peat moss. Peat moss looks like the best bet but how much do I need to add?
Jean
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How to add elemental sulfur to garden for blueberries

I have soil in my garden that the pH is 7.0 and need to lower the pH. If I add elemental sulfur to the soil (I already know the proper rate per square feet). Do I just apply the proper sulfur amount to the soil, use a shovel to distribute the…
scarlson
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Practical to feed a pond from an existing stream on the property?

Our garden has a stream on one border of it, and I'm considering adding a pond. I'm curious if it'd be practical to pump water from the stream into the pond, and then have an overflow that fed down a small run back into the stream? I know very…
Codemonkey
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What element is needed to turn Hydrangea flowers blue?

What element is needed to turn Hydrangeas blue? Is it sulfur or aluminum?
S. Marucco
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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. Is there some biological effect that would…
crj11
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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 getting dry and dark. I live in Valencia, Spain,…
EdgarAP
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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 trees has to do with it).
Brōtsyorfuzthrāx
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Distilled water (pH 5.5 due to dissolved CO2) recommended for soil test - Do I need to adjust reading?

All available sources recommend using distilled water for performing a soil pH test. However, distilled water by itself is anywhere between pH 5.5 and 6.5 due to dissolved CO2 (HCO3- ions). In my case, the distilled water is pH 5.5 according to my…
Jim Garrison
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Most accurate home pH test?

What test mechanism (e.g. strips, probes, etc..) that can be purchased online for self testing soil pH is the most accurate? Any recommendations on specific products/brands?
Paul W
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Cheapest and fastest method to lower the soil pH for potatoes?

I am going to plant some potatoes in two/three weeks, but my soil's pH is around 6.8, which is not very suitable for them. I would like to know if there is a way to lower the pH in two/three weeks in a relatively cheap way. The soil is more clay…
Marcel Kopera
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Relationship between PH and PPM in Hydroponics solution

I'm making some Hydroponics system, which will automatically measure PPM in water for Deep water system. I'm able to measure PPM every x minutes, but I will have to measure PH manually, because I don't have a sensor for that. I would like to know if…
Marcel Kopera
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Soil PH Sensors, Okay? or Snakeoil?

This is my first post here, I have been wondering if soil PH sensors are real or fake? An example is Soil Sensor. After reading through this post, these seem pretty useless. However the answers here talk about how USEFUL they are not if they give…
user77533
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New blueberry plants turning red

My new blueberry plants are turning red! These are my second ones after Ii couldn't acidify the soil of the first batch fast enough. Do you think this is pH again? I read it could also be due to cold weather? I'm running out of ideas of what to…
moinudin
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