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#16
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Coffee grounds
On Nov 11, 3:41*pm, Bud wrote:
Coffee frounds are great for alkaline soil. I put a lot around my hydrangeas. I'm getting more redish blossoms. -- Bud Bud, you are getting reddish blossoms on your hydrangeas because the soil IS more alkaline. Acidic soil is what is required to produce blue hydrangea flowers. The UCG's are not going to have much of an impact on existing soil pH - they are only just slightly acidic (most of the acid is extracted with the liquid coffee from the grounds during brewing) and it would take a huge amount of them to effect any significant change. Generally, when an acidic based material is used as a mulch - like the coffee grounds or pine straw - there is no change to soil pH except a slight lowering at the soil surface. |
#17
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Coffee grounds
gardengal wrote:
On Nov 11, 3:41 pm, Bud wrote: Coffee frounds are great for alkaline soil. I put a lot around my hydrangeas. I'm getting more redish blossoms. -- Bud Bud, you are getting reddish blossoms on your hydrangeas because the soil IS more alkaline. Acidic soil is what is required to produce blue hydrangea flowers. The UCG's are not going to have much of an impact on existing soil pH - they are only just slightly acidic (most of the acid is extracted with the liquid coffee from the grounds during brewing) and it would take a huge amount of them to effect any significant change. Generally, when an acidic based material is used as a mulch - like the coffee grounds or pine straw - there is no change to soil pH except a slight lowering at the soil surface. I was wondering about that myself. Unless he wanted red blossoms. For blue hydrangeas blue spray paint works well also Ok, I do not that, but I do know a local gardener that does paint the blossoms. Looks cool from a distance. -- Enjoy Life... Dan L (Garden in zone 5a Michigan) |
#18
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Coffee grounds
Dan L wrote:
gardengal wrote: On Nov 11, 3:41 pm, Bud wrote: Coffee frounds are great for alkaline soil. I put a lot around my hydrangeas. I'm getting more redish blossoms. -- Bud Bud, you are getting reddish blossoms on your hydrangeas because the soil IS more alkaline. Acidic soil is what is required to produce blue hydrangea flowers. The UCG's are not going to have much of an impact on existing soil pH - they are only just slightly acidic (most of the acid is extracted with the liquid coffee from the grounds during brewing) and it would take a huge amount of them to effect any significant change. Generally, when an acidic based material is used as a mulch - like the coffee grounds or pine straw - there is no change to soil pH except a slight lowering at the soil surface. I was wondering about that myself. Unless he wanted red blossoms. For blue hydrangeas blue spray paint works well also Ok, I do not that, but I do know a local gardener that does paint the blossoms. Looks cool from a distance. Many years ago my wife came home with a wonderful blue and white striped carnation that she had bought at the railway station on the way home. In the day when carnations were $2 a dozen she had paid $1 for one stem. It was may sad duty to tell her it was a white carnation that had been stood in blue ink for a while and it had sucked some up through its water transport system. But it was very pretty. David |
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