remove or cover mulch - Knowledgebase Question

winder, Ge
Avatar for duggermom
Question by duggermom
April 20, 2009
I have a bed of mulch and want to lay lava rock instead. Is it wise to just cover the existing mulch, or should it be removed before laying the rock.

Answer from NGA
April 20, 2009
The mulch should probably be removed. You can use it elsewhere in the garden. Before laying down the lava rock, cover the area with weed barrier cloth to keep weeds from popping through the lava rock. If you leave the mulch and cover with lava rock the mulch will eventually decompose and you'll have weeds growing through the lava rock. So, remove it, cover the area with weed barrier and then put down your lava rock. Best wishes with your garden!

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