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Flatish Rocks as mulch

Posts: 166

Location: Yucatan Puebla Ontario BC

posted 13 years ago

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Rocks can be pulled from deeper in the soil and placed on top around plants. This method works well with perennials, If I kill half the weeds near a crop plant with a rock than the plant is sure to survive at the least. Rocks on the surface also stop evaporation.

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John Polk

steward

Posts: 7926

Location: Currently in Lake Stevens, WA. Home in Spokane

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posted 13 years ago

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They can also collect dew overnight, and feed it to the soil in the morning.

Ed Johnson

Posts: 86

Location: Durham region - Ontario, Canada - Zone 5

posted 13 years ago

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I can't quantify how much of an impact colour would have but I'm sure there's bound to be a component. i.e. choose dark rocks for 'hot' plants like peppers and use the rest where it doesn't matter so much. Thoughts?

Judith Browning

Posts: 9625

Location: Ozarks zone 7 alluvial, clay/loam with few rocks 50" yearly rain

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posted 13 years ago

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Our local armadillos like to nose around the things that I have just watered so I use rocks as mulch around more delicate plantings.
Most of our rocks are pale and seem to keep the soil cool and moist no matter how hot the rocks surface gets from the sun.

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Jeffrey Hodgins

Posts: 166

Location: Yucatan Puebla Ontario BC

posted 13 years ago

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Conveniently for me in Puebla where I need hot rocks the rocks are black and in Yucatan where I need cold rocks the rocks are greyish white.

Xisca Nicolas

pollinator

Posts: 1981

Location: La Palma (Canary island) Zone 11

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posted 13 years ago

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I do it too, but it is a little bit of a problem when you want to plant or sow around the perenial...
And where i put the stones on top, well, the year after, its a little messy, as I use it also for annuals (tomatoes).
I also put the stone around the cut plastic bottles that prevent lizards for eating all!
(or the wind might be so friendly with lizards!)

This is used in the south of France for sowing the little spelt. Stones occur naturally in the fields, and this spelt needs 11 months in the field.
People here say it's good to have stones even underground, for preventing evaporation.

I read a document about dry earth being a good mulch too...
(if it is loose with no capilarity)
And about weeds giving shade but being a bad mulch, as water evaporates through them!!!

Xisca - pics! Dry subtropical Mediterranean - My project
However loud I tell it, this is never a truth, only my experience...

Ken LaVere

Posts: 35

Location: Southern Kentucky near Glasgow

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posted 12 years ago

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I was looking into the "Back to Eden" method of very heavy mulching gardens and orchards they were also talking about the benefit of having stones in the soil. There are so many "truths" in this world we must unlearn especially from industrial agriculture.

http://backtoedenfilm.com/how_to/index.html

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Morgan Morrigan

Posts: 1400

Location: Verde Valley, AZ.

posted 12 years ago

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find a good, local, lichen to put on those rocks too !

you can mix some up in a milk bath, let it grow a couple days, then spray it out on them.

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Xisca Nicolas

pollinator

Posts: 1981

Location: La Palma (Canary island) Zone 11

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posted 12 years ago

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By the way, I also use little stones in pots with little plants!
- Easier to water them without holes in the pot mix...
(I mean with the fast method to water!)
- Less evaporation for the little roots, as they are shallow.

Xisca - pics! Dry subtropical Mediterranean - My project
However loud I tell it, this is never a truth, only my experience...

Ginna Quesada

Posts: 14

posted 12 years ago

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does anybody know the average amount of water an X sized rock can help retain in the soil???

Xisca Nicolas

pollinator

Posts: 1981

Location: La Palma (Canary island) Zone 11

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posted 12 years ago

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I guess even no one knows how much water there is in one's own soil...
It also depends on the depth of the soil, and its quality (humus is best)

Xisca - pics! Dry subtropical Mediterranean - My project
However loud I tell it, this is never a truth, only my experience...

Morgan Morrigan

Posts: 1400

Location: Verde Valley, AZ.

posted 12 years ago

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one of the southern Cali universities did a study in the salton sea area.

rocks worked better than than organic mulch in the desert.

don't think they did actual measurements of soil moisture, just plant survival.

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Devon Olsen

Posts: 1274

Location: Central Wyoming -zone 4

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posted 12 years ago

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i think rocks are a neccesity in every system, different placement and uses in different systems, but i'd say nessacary

in my cheyenne property where i am trying to to maximize winter ehat gain and deflect some of the heat in the summer, i plan to have darker colored rocks on southfacing slopes and south sides of rock piles, and lighter colored rocks on the north facing slopes and north side of rock piles, that way during the hotter summer months the whiter rocks deflect more heat and reflect more radiation, rather than absorb it, and during the winter months, the darker rocks take the most direct radiation and capture the most heat

the dew and condensate fact is a great thing to consider with rocks

flat rocks will likely capture more mid-day heat while reflecting more of the early mornign and late evening temps but will slow water the most and spread it more when it comes down as well as give good habitat for cooler-blooded predators and such

kinda kicking myself off the internet for the night but yeah - rocks ROCK!

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