Potting soil
organic matter
Clayey Soil most retain water.
Clay retains the most water.
Soil both absorbs and retains heat. The length of time soil retains its heat is dependent upon the amount of moisture or water in the soil.
loamy
an expirement
Sand
Water retains heat much better than soil, so in general the water will cool slower than the surrounding soil.
every type of soil does dur dur look it up im right right
Different plants have different soil requirements but for general gardening loam is considered ideal because it retains nutrients well and retains water while still allowing excess water to drain away.
The best soil for growing vegetables in is usually considered Peat soil. This is a heavy rich soil that retains water. It's hard to get though, so any soil with a high water content is ideal.