
Compost Delivery in Boulder, CO for Foothill Yards
Bulk compost delivered in Boulder, CO. Dark brown color.
Starting from $522.45 delivered to Boulder for 2 yards, our minimum order
Compost delivery in Boulder, CO: how much to order
Compost delivery in Boulder, CO suits yards that sit against the foothills, where the ground changes from one lot to the next. Some lots have thin, rocky soil, and others have dense clay that holds water too long after a storm. A dark, crumbly compost worked into either type gives roots more to grow in and helps the ground keep its moisture.
Compost is sold by the cubic yard, not by weight. Choose your quantity on our site, enter your ZIP, and the delivered price for that address is shown before you check out.
Multiply the length in feet by the width in feet, then by the depth in inches, and divide by 324 to get cubic yards. A 20 by 12 foot planting area spread 3 inches deep needs about 2.2 cubic yards. The calculator on this site does that arithmetic for you once you enter the measurements.
Compost runs about 1,000 pounds per cubic yard, which is a lot of material to picture before it shows up.
Irregular beds are easier to measure if you split them into rectangles, work out each piece on its own and add the totals together. Round the final figure up so the layer comes out even across the whole area.
Best uses for compost in Boulder
Boulder gardeners tend to put compost to work in these ways:
- Vegetable and herb beds, refreshed with a new layer each spring.
- Perennial borders on slopes, where rain carries the top layer downhill.
- Lawn repair and overseeding, spread thin so the grass can push through.
- Fruit tree and shrub holes, mixed with the native soil at planting time.
Local overview of Boulder soil and yards
Boulder has roughly 106,000 residents. The housing mix runs from older bungalows with mature trees to newer infill lots, and soil quality shifts from one block to the next. Gardeners in the foothills often plan around the dry months, since compost worked into moist soil breaks down more evenly than loose material sitting in dry ground. A simple sample from your own yard tells you more than any general rule. Compost is the usual fix in most cases because it improves structure whatever the starting point.
Containers and raised planters call for a different blend. Mix a share of finished compost into the potting mix to help it hold water between waterings, and keep bagged product for the smaller jobs.
Comparing compost with pea gravel and topsoil
Think of compost as the ingredient for planting areas. If the plan also includes a walkway or a swale, Pea Gravel is the tonnage product for that, and Premium Screened Topsoil is another tonnage product for grading a low spot ahead of seeding.
Delivery to Boulder
The delivery in Boulder page has the city details. Nearby towns include Arvada, about 20 miles away, and Westminster, about 21 miles. Thornton sits about 24 miles off, while Lakewood and Denver are each about 26 miles away. These distances are approximate.
Pricing notes for compost in Boulder
The smallest order is 2 cubic yards. The delivered price for your ZIP is shown on the page, and it already includes delivery to your address. Larger orders get a lower rate per cubic yard, so a 6 cubic yard order usually works out cheaper per yard than two separate 3 cubic yard runs.
Check the price at two quantities before you settle on one. A slightly bigger order sometimes lands on a lower rate, which can be worth it for a large bed or a set of beds.
Pick a drop point that is easy to reach with a wheelbarrow, since bulk material gets moved by hand after it arrives. A short, level path from the spot to each bed saves a lot of trips.
Ordering compost in Boulder
- Put your Boulder ZIP code into the compost page.
- Enter a quantity of 2 cubic yards or more.
- Look over the delivery address and finish checkout.
If your project sits outside Boulder, Compost in Colorado lists every other city we serve.
About Compost
Think of compost as the finished end of the decomposition cycle: plant material, manure or food scraps that have broken down into a dark, earthy, crumbly product. Good compost smells like a forest floor, holds its shape when squeezed slightly moist, and does not show recognizable leaves or stems. It is a soil builder, not a fertilizer on its own.
Boulder yards often need organic matter more than anything else. Thin soil on slopes sheds water, and dense clay in some low spots holds it too long. Compost helps both problems by adding structure and giving the soil more capacity to hold moisture. Thin layers work for lawns, while deeper layers suit new beds and planting holes.
Compost weighs roughly 1,000 pounds per cubic yard, and it settles over the first few weeks after it goes down. Plan for a little extra volume so the bed finishes at the grade you want. The material is sold by the cubic yard, so the quantity you order should match the area you measured.
What Compost costs in Boulder
Local Boulder yards quote compost by the ton; the delivered number includes fuel, the truck, and the haul. Send your ZIP and load size and we will send back a same-hour quote with the truck rate and the per-ton figure spelled out. A ton of this material spreads across about 216 sq ft when laid 3 inches deep, useful when you are sizing a patio base or a walkway run.
How crews use Compost in Boulder
In and around Boulder, compost shows up most often on two project types. The most common deployment is planting bed gravel, often in tight urban lots and infill builds in two to three inch lifts. At roughly 105,898 people, the Boulder order mix leans toward 3 to 8 ton residential drops with the occasional 16 ton job for a contractor.
Delivery day in Boulder
A typical Boulder drop is dispatched from the closest yard with a two hour window and a heads-up call once the truck is loaded. Tandem trucks want a 12 ft lane in and out; tri-axles need 14 ft, and both want firm ground at the tipping spot so the load releases cleanly. Standard lead time on this lane is Mon-Sat, with same-day windows held open for orders that hit the desk before 11 AM and clear payment.
Related materials we deliver in Boulder
Estimate how much you need
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A planning figure, not a guarantee. Order roughly a tenth extra to cover settling and uneven ground.
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Can I plant right after spreading compost?
Usually yes. Finished compost is ready to plant into, so seedlings and transplants can go straight into a worked-in bed. For seed, rake the surface smooth first and press the seed in lightly. Water gently after planting so the seed and roots settle into the soil, and give new transplants a few extra days of attention while they establish.
What depth of compost should go into a Boulder lawn?
Lawns need a much thinner layer than beds. A quarter inch to half an inch spread across the surface and raked in is enough for a top-dress or overseeding. Beds and planting holes take a deeper mix. Measure the area first, run the numbers through the volume formula and order to match.
Can I use compost on a slope in Boulder without it washing away?
Yes, but keep it worked into the soil rather than piled on top. On a slope, mix compost into the top layer and plant right away, or cover a fresh spread with a light mulch. Water gently at first so the material does not run downhill with the first hard rain.
Will compost fix poor drainage in Boulder clay?
Compost helps over time by adding structure. Clay mixed with organic matter forms more pore space, so water moves through more evenly. One application will not solve a serious drainage problem by itself, so repeat light applications over a few seasons and watch how standing water changes after storms.
Do I need to remove rocks before spreading compost?
Pull out anything larger than a fist, since big stones get in the way of digging and root growth. Small pebbles can stay, and thin, rocky Boulder ground often has plenty of them. Rake the area level, then spread the compost evenly so it fills the gaps between stones and builds a loose layer that plants can root into.
Will compost attract pests to my beds?
Finished compost has an earthy smell and rarely draws animals. Fresh kitchen scraps are what attract them, and those do not belong in a delivered product. If you notice a sour or rotten odor, spread the pile thin and let it air out before using it. Keep compost clear of the walls of the house so moisture does not sit against the siding.
How deep should compost go on a vegetable bed?
Spread two to three inches and fork it into the top several inches of soil. That depth feeds the root zone without burying seeds too deeply. In following seasons you can cut back to a one inch top-up, because the first application has already improved the bed. Heavy feeders like tomatoes and squash respond well to a bit more.
Can I spread compost over existing mulch?
Rake the old mulch aside first, spread the compost over the bare soil, then pull the mulch back on top. Compost under a mulch layer stays moist and feeds the soil, while compost buried beneath thick mulch has little contact with the ground. Fresh mulch on top also keeps the surface from drying out in the dry months.


