[DeanFL]

In our TV house for almost 3 years. Had the builder pine straw all around. When designing our new landscaping with stacked walls etc, decided we want a red/brown stone look for rocks, inside the cream stacked walls. Got quotes - initially I preferred red lava rock, as the cost seemed about 1/3 of river rock. I did our backyard, with lava rock-bagged from HD, and it looked just great around the plants and patio.
When we talked with landscape co's for front qoutes - one said NO to lava rock as it developed blackish mold over time due to the pores. That said we went with reddish river rock for our front - 2+years later, the rock and front landscape looks like new and beautiful - the back, yes...blackish coverage on much of the lava rock - oh well...live with it.