Ideas
How Much You Need
Compost
A rule of thumb is to add 1 to 1.3 cubic yards of compost to every 100 square
feet of soil. Download this free compost or mulch calculator to work out the
math. This will give you enough to spread a three- to four-inch layer of compost
on top of your planting area. Use a shovel or spade to mix it into the top few
inches of soil. Be careful not to disturb plant roots.
Mulch
As with compost, add 1 to 1.3 cubic yards of mulch to every 100 square feet of
soil. Use your hands or a rake to spread an even, three-inch layer. If you have a
large property, call a mulch-blowing service for delivery and installation. Keep
mulch about six inches away from plant stems and tree trunks so they stay
dry. As mulch decomposes and integrates with the soil, add more to maintain
a three-inch layer. Expect to add more every six to 12 months.
Where to Buy
For small jobs, buy bagged compost at a nursery or garden supply store. For larger jobs, buy
in bulk and fill a pickup truck at one of San Diego's regional facilities:
$10-$12 per cubic yard in bulk
Miramar Greenery
Located inside Miramar Landfill and open to the public. Bulk sales only. FREE compost and
mulch is available to city of San Diego residents who load it themselves.
5180 Convoy Street, 858.694.7000
El Corazon Compost Facility
Open to the public. Bagged and bulk compost and mulch. Delivery available throughout
San Diego County. FREE compost and mulch for city of Oceanside residents who load
it themselves.
3210 Oceanside Boulevard, 760.439.9920
Solana Center
Located in Encinitas and open to the public. The Solana Center offers bins for sale,
free composting workshops and "rotline" advice for homeowners, students
and facilities.
137 N. El Camino Real, 760.436.7986
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