Serving Seattle & Surrounding Areas

Newcastle, Washington's Landscape Supply Company

We make landscaping projects simple, reliable, and stress-free.
Order Mulch Today

Local

Delivery to your home

Fast

Delivery

Transparent

Pricing

How It Works

Getting started is easy — just follow these simple steps

1

Choose your product

Make sure you adjust the quantity to your home's needs. You can use our calculator to estimate how much you'll need.

2

Select your delivery date

Select a delivery date you'd like for the product to be dropped off at your home

3

Sit back and wait

Sit back, wait, and let us work our magic to make sure the highest quality product is delivered to your driveway.

Read What Seattle Thinks About Us

4.7
out of 5 based on 137 reviews
Google Reviews
Emily Vertosick
Emily Vertosick

My experience with Mulch Mound was great and super easy. I ordered two yards of screened topsoil and was able to get it delivered within 2 days. Th...

Read full review

My experience with Mulch Mound was great and super easy. I ordered two yards of screened topsoil and was able to get it delivered within 2 days. They came in my requested time frame (afternoon) and dropped it off where I asked on my driveway. The topsoil was exactly what was advertised, clean with no rocks or other debris. The price was reasonable. I plan to use them again in a couple weeks to order compost for my garden beds.

Google Review
Miguel Besosa
Miguel Besosa

The website was intuitive and easy to navigate. The material was delivered the date and time it was scheduled, it was dropped off in the area i had...

Read full review

The website was intuitive and easy to navigate. The material was delivered the date and time it was scheduled, it was dropped off in the area i had specified on top of my tarp with no issues. I ordered soil, the Gardening Blend that I received had too many plastic and metal pieces for my liking thus lowering the score from a perfect 5/5 to a 4/5

Google Review
Zack Fredericks
Zack Fredericks

The ordering process was unbelievably convenient, including graphical interface for dropoff location selection. I will order from Mulch Mound agai...

Read full review

The ordering process was unbelievably convenient, including graphical interface for dropoff location selection. I will order from Mulch Mound again and would recommend to others.

Google Review

Complete Your Newcastle Outdoor Project

We’ve got you covered with our full line of landscape supply products, from premium mulch and quality soil to decorative stone, helping you create a cohesive, professional landscape that enhances your property for years to come.

Seattle Mulch Delivery
Seattle Stone Delivery
Seattle Soil Delivery
Mulch Mound Pro Tip

Massing fewer species creates stronger visual impact in Newcastle landscapes than scattering one of everything throughout beds with no repetition. Simplified plant palettes with intentional repetition of key species read as professional, purposeful design. Excessive variety without organizational structure appears random and confused rather than curated.

Need Help Calculating How Much You Need?

Use our NEW bulk material calculator where you can Trace from Satellite imaging to get a quick estimate for your project without busting out the tape measure

Try Our Calculator
Mulch Mound Pro Tip

Newcastle's sloped topography makes gravel pathways and dry-stack stone borders both practical and visually striking. Use five-eighths inch crushed basalt for paths,it compacts firmly and handles the region's heavy annual rainfall without washing out the way round pea gravel does on grades. Set a four-inch compacted base layer first, then finish with two inches of surface rock, and the path will hold through wet winters and into Newcastle's dry summer season.

Map of neighborhoods near Newcastle, Washington

Other neighborhoods we deliver to around Newcastle, Washington

See All Locations
Mulch Mound Pro Tip

Amending Newcastle's glacial till with bulk compost each fall steadily improves its structure over time. Spread two to three inches of finished compost across beds after cutting back perennials in October, then let winter rain integrate it naturally. By spring, soil tilth improves noticeably,better drainage through wet months and better moisture retention during the dry July-through-September period typical of this part of King County.

Frequently Asked Questions

Click a question to see the answer

Answer

What bulk rock is best for a dry creek bed drainage feature in my Newcastle yard?

Use river cobble three to five inches for the visible streambed and three-quarter inch drain rock for the buried drainage trench beneath it. Newcastle's significant annual rainfall means your dry creek will carry real water volume during winter storms, so proper sizing matters. Line the buried trench with filter fabric before adding rock to prevent glacial till fines from migrating in and clogging the system over time.

Answer

How often should I refresh bulk mulch in Newcastle planting beds to maintain weed suppression?

Plan to top up Newcastle planting beds with one to two inches of bark mulch every fall. Mulch breaks down faster in the Pacific Northwest's wet climate than in drier regions,within twelve to eighteen months, medium bark mulch has often decomposed enough to lose effective weed suppression. Fall application also provides root insulation before the November 15 frost date.

Answer

Is topsoil or compost better for filling low spots and uneven areas in a Newcastle lawn?

Use a fifty-fifty blend of screened topsoil and compost for filling low spots in Newcastle lawns. Pure topsoil over glacial till can be too dense and impede drainage. The compost component improves soil structure and helps grass roots knit into the fill more quickly. Apply no more than one inch per treatment to avoid smothering existing turf, then repeat as needed.

Get Started with Mulch mound Today

Beautiful yards are a Newcastle tradition, and we're proud to be part of it. As part of the Seattle delivery zone, Newcastle enjoys access to our full range of products. Your next landscaping project is just a few clicks away.

See what other options Mulch Mound offers for landscape supply delivery in Seattle