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If you hire a professional landscaper, you could expect to pay between $90 and $660 to install three cubic yards of river rock. (That’s based on the average river rock installation cost of $30 to $220 per cubic yard.) However, the exact price depends on the kind of river rock you choose. Crushed limestone and riprap are some of the more affordable options, while boulders and Arizona river rock are pricier.

Yes, grounds count when calculating box fill. A single volume allowance is made when up to four equipment grounding conductors or equipment bonding jumpers enter the box. It’s important to account for all wires and fittings when calculating box fill. Beyond the first four, each additional grounding conductor should be counted as ¼ volume.

Hydroseeding is a great option for sloped yards, as sod might not root as well. Hydroseeding also traditionally creates sprouts faster than normal seeding—up to a full week faster. Additionally, you can customize your slurry mix with hydroseed, allowing you to create a mixture that will work specifically for your yard’s conditions. 

It’s important to remember that hydroseeded lawns require a lot of water during the first few weeks of installation, which can be time-consuming and costly. Additionally, the installation window tends to be shorter than that of sod and traditional grass. 

As a base, you should use a fertilizer with a 5-5-5 NPK ratio (5% nitrogen, 5% phosphorus, and 5% potassium). You may need a different ratio depending on what your soil is lacking, but a soil test can help determine the perfect amount.