posted 13 years ago
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...