Any Oaks that will thrive in Alkaline soil?
sarabell
16 years ago
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pineresin
16 years agosarabell
16 years agoRelated Discussions
Do pine trees make alkaline soil more acidic, or is that a myth?
Comments (36)There are many things that determine what a soils pH will be, and all have been clearly laid out here by several contributors. What the soil is composed of, rainfall, and amount of organic matter all play a role in how many free Hydrogen ions are in that soil and soil pH is a measure of that. What is needed to change a soils pH depends on where it is and what is meant to be done. Adding lime (Calcium Carbonate) will reduce the free Hydrogen ions and raise the soils pH while Sulfur adds more of them and lowers the soils pH. A good reliable soil test from a good soil testing lab is a good source of information and they should be able to tell you how much Sulfur needs to be added to make the needed changes. Adding 1 pound per 1,000 square feet when 10 pounds is needed will not do much of anything. Throwing a handful or three of something is more a waste of time, money, and energy than any help. Here is a link that might be useful: understanding soil pH...See MoreI have pretty Alkaline Soil and trees won't grow.
Comments (9)Get a soil test to find out just what you have. You may have a salinity problem, or you may have a high sodium soil producing alkali. The white powder on the surface suggests one or both of these are the problem, in which salts from the soil come to the surface with moisture, which evaporates leaving the salt behind as a white powder, and eventually accumulating to the point you have this problem. Whether you can restore the soil to health depends on how the problem got there. Talk to your local ag extension agent about your soil test results for recommendations on clearing up the problem with the soil and for suggestions on trees which will grow well in your area on these types of soils. If you can remove the salt, the trees you have should do fine. If you have a highly alkaline/sodic soil, the use of gypsum can help while you clean the salts out of the soil. In addition, ferrous sulphate can help offset the iron chlorosis these trees may have, which is caused by the high pH tying up the iron in the soil, then the trees will become much healthier. But, you will need to treat the soil problem or you will never be able to do much with trees. If you can treat the problem, you will have an excellent chance of growing many different kinds of trees. Where I live had a similar problem--50 years ago when my dad bought the place the soil surface was pure white, nothing grew but one small, sickly box elder. After getting help from the extension agent and soil conservationists, he cured the problem leading to the salt accumulation, and within a couple years had trees growing which are now over 100 feet high in some cases....See MoreWhich is more tolerant of alkaline soils, pin oak or sweetgum?
Comments (15)Providence could be all the more important if you consider the Rotundiloba form of sweet gum, to avoid the spiky balls. So the question becomes, what about that one in particular? Unless no one using the yard likes to go barefoot. Per the link I'm providing, sweet gum is only recommended for acid soils as chlorosis develops in soils with pH > 7.5. Any reason you're stuck with these 2 choices? Some oaks better tolerate higher pH than pin oak, from what I recall. Aren't there some 'local provenance' Shumard Oak in Texas that can handle higher pH? If so, would one work in your area? Richard. Here is a link that might be useful: Here's a link to a PDF on sweet gum....See MoreAlkaline or carbonate-rich soils and their nutrient problems
Comments (10)Great ideas! Gonebananas, thumbs up for experimenting, please let us know the result. I have been pondering the solutions to my alkaline soil, with iron chlorosis my biggest concern. The horse manure I got for my roses had lime (calcium carbonate) and pH of over 8. Stables use lime to deodorize their stalls. Lime is a potent fungicide and I don't have any black spots nor botrytis on my roses - that I like. However, lime also raises pH, with phosphorus got tied up in calcium, and my roses' blooms decreased. Horse manure is high in phosphorus but the lime makes it unavailable. My question is: does lime (calcium carbonate) moves with water, or does it stays where applied? Nitrogen moves withh water, but phosphorus and potassium stay put where applied (from EarthCo. booklet). Can I still keep the horse manure as mulch to prevent roses' fungal diseases, but use an ACID SOLUBLE fertilizer to break down the phosphorus in my fertile clay soil? My garden pH of 7.7 give tons of blooms, except for roses. Alkaline clay soil is fertile with lots of phosphorus for plants thriving in the pH of 7.5 to 8.5 zone, such as Begonis, Callendula, Clemantis, Foxglove, Marigold, and Geraniums. It's the picky roses that do best at pH 6.5 that I have to fix the soil. I need help with this: Is lime soluble and moves with water like nitrogen, or does it stay put where's applied like phosphorus and potassium? Many thanks for any info....See Morepineresin
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