Jaz
Well-Known Member
I saw a vid the other night and the guy was recommending lava rocks over perlite, particularly for those that re-use their soil.
His argument being that perlite will break down over time and turn into a silt whereas lava rocks don't break down.
I thought I'd read up on it and found a few tidbits pertaining to using it as a mulch:
they absorb heat well.
This might sound like an unusual advantage when it comes to gardening but if you lay down lava rocks as mulch, the heat they absorb during the day will keep your plants warmer at night.
This is especially good for potted plants that are brought in during the winter months.
Having the heat at night means they can last a little longer outside without needing to be brought in.
Pumice vs Lava Rock for Plants: Which is Better?
In summer, lava rocks act as mulch to reduce the premature evaporation of irrigation water. This keeps the garden soil moist and cool for longer, which your plants really appreciate.
How Using Lava Rock for Soil Additive Can Seriously Improve Plant Drainage
I'm keen to read thoughts and experiences with lava rocks - other than in hydroponics.
j
His argument being that perlite will break down over time and turn into a silt whereas lava rocks don't break down.
I thought I'd read up on it and found a few tidbits pertaining to using it as a mulch:
they absorb heat well.
This might sound like an unusual advantage when it comes to gardening but if you lay down lava rocks as mulch, the heat they absorb during the day will keep your plants warmer at night.
This is especially good for potted plants that are brought in during the winter months.
Having the heat at night means they can last a little longer outside without needing to be brought in.
Pumice vs Lava Rock for Plants: Which is Better?
In summer, lava rocks act as mulch to reduce the premature evaporation of irrigation water. This keeps the garden soil moist and cool for longer, which your plants really appreciate.
How Using Lava Rock for Soil Additive Can Seriously Improve Plant Drainage
I'm keen to read thoughts and experiences with lava rocks - other than in hydroponics.
j