what type of rocks attract heat during the day and release it at night?
heard οf a gardening technique thаt uses rocks tο release warmth аt night аnd thе plants lіkе thаt, ѕο i want tο know whаt rocks аrе best fοr thаt
аnd best рlасе tο locate thеm
thanx a million
hοw tο сhοοѕе a best аnѕwеr thеу аrе аll ехсеllеnt
Any rocks do that. You need dark colored rocks to hold the most heat. The lighter colored ones hardly save any heat at all.
You can find them at lakes, along the side of creeks and streams, or you can buy them at any gardening store.
Like the former person said, goto the darkest rock for maximum absorption. and the places you get the rocks is completely up to you (either buying or finding) Just remember that when you take a rock from the “wild” you affect the erosion on a minuscule scale…
If you just need some warmth for plants you may possibly use a heat sink. I use this in my greenhouse to help save heat in the winter. I use one gallon plastic milk containers, spray paint them black and fill them with water. The sun heats the water and the affect helps to contain the heat. You may possibly use this type of heat sink and then take in the bottles with dark colored rocks for extra warmth.
“Dark colored rock will save heat in the landscape and may offer some frost protection (reradiated heat) for fruit trees in the spring (it also may encourage early breaking of dormancy).”
http://www.tindaraorchids.com/index_tindara.htm?mediums_mixes.htm~rbottom
Rock mulch is an brilliant choice where a more formal look is desired, or in locations where wind can blow away wood-based mulches.
Since it tends to save and radiate heat it’s not the best choice to go along the sunny side of a house. It’s also not a excellent choice around heat-sensitive plants. On the other hand, dryland plants with hairy leaves and tender stems do much better in rock mulch than in wood-based mulch, which keeps the soil too moist and promotes root rot.
http://www.denverwater.org/cons_xeriscape/xeriscape/RockMulch.html
The amount of water in and the permeability of the surrounding country rock is also a factor. If the country rock is permeable and contains groundwater, heat will be able to go by convection.
http://www.tulane.edu/~sanelson/eens211/contact®ional_metamorph.htm
Excellent luck! Hope this helps.