(503) 636-3623 Office
(503) 644-5355 Beaverton-Tigard
(503) 254-5504 Portland
(503) 692-3756 Tualatin Yard

Hours of Operation
Yard and Recycling Center   Monday - Saturday 7:00 - 4:30
Sunday 9:00 - 4:30   Pick Up until 5:00
Office    Monday - Friday 8:00 - 5:00   Saturday 8:00 - 4:00

Coverage Calculator

Grimm's Garden Mulch

This Organic Compost is made from lawn and garden trimmings. Whether spread on top or mixed with regular garden soil, Grimm's Garden Mulch is ideal for all types of planting. Grimm's Garden Mulch is black and rich and that will help improve your soil.... and is an excellent all purpose soil amendment and ground cover. Garden Mulch is tested and certified to meet US Composting Council standards as well as OMRI listed.

Recommended Use: As a top dressing - apply 2" to 3" to the surface. As a soil amendment - apply up to 2" to the surface and rototill with 2" to 4" of existing soil. Apply lime and fertilizer as needed

Mushroom Mulch

Formulated as a high quality soil amendment, this blend of Grimm's Garden Mulch and Mushroom Compost (the compost mushrooms were grown in it) is the ideal amendment for enhancing poor quality soils. From vegetable gardens to lawns and flower beds. Mushroom Mulch is the soil amendment for all your planting needs.

Recommended Use: Apply up to 2" to the surface and rototill with 2" to 4" of existing soil. Apply lime as needed.

Grimm's Potting Mix

This "soiless" potting mix is used by both commercial nurseries and homeowners for container gardening. Aged Barkdust, Mushroom Compost, Grimm's Garden Mulch, pumice, and sand are blended together to form a well balanced growing medium suitable for most container growing applications.

Recommended Use: Outdoor containers, hanging baskets, planters, and 4" plus containers. Note: Container Gardening requires special attention to fertilizing and watering.

Grimm's Lawn & Turf Mix

This mix is specifically formulated as a starter base for new lawns (sod, seed or hydromulch). Grimm's Garden Mulch is blended with sand and aged barkdust. Grimm's Lawn and Turf Mix can also be used to top dress and level an existing lawn after aeration.

Recommended Use: Apply up to 2" to the surface of your existing tilled and amended soil. Consult your lawn care professional for best results.

Grimm's Blended Soil

The ideal alternative to top soil. Blended Soil is a mixture of Grimm's Garden Mulch, sand loam, top soil, and manure. Excellent for vegetable gardens, lawns, and native plants. Perfect for those jobs where you need more dirt, such as berms, raised beds, flower beds or lawn areas.

Recommended Use: This soil is ready for direct planting. Plant directly into this mix and fertilize according to the plants nutritional requirements

Barkdust Fir or Hemlock

Colors range from the traditional red to dark brown-black shades in Fir or Hemlock Barkdust. All of these products come in either medium or fine grind. If you prefer the darker, richer looking ground cover, Grimm's Garden Mulch is the choice, which is black in color, to provide an outstanding contrast in your landscape that also acts as an organic ground cover.

Decorative Rock

River Rock ....3/4" - 2"

Crushed Rock....1/4" - 1/2"

Red Cinder....1/2" - 3/4"

Pea Gravel

Cedar Chips

Ideal for filling around playgrounds

Put down that shovel and let

Grimm's Advanced Bark Blowing

install your ground cover for you!

Things to Remember:


Keep soil moist until seeds are germinated

Water 3 or 4 times daily. Adjust water to match weather

Avoid over watering, puddles and run off.


1 unit covers 2400 square feet at 1 inch deep

1 unit covers 1200 square feet at 2 inches deep

Coverage Calculator

Barkdust and other ground covers





Cubic Yards Required: 

1 Cubic Yard = 27 Cubic Feet
1 Unit = 7.4 Cubic Yards = 200 Cubic Feet