Soil, containers and media

Rockwool cubes soaking in a tray of water before planting

Rockwool for Cannabis: Pros, Cons and How to Prep It

Rockwool is a uniform grow medium used for clones and hydro. Learn how it compares for cannabis, its drawbacks, and how growers prepare it.

Cannabis branch wrapped in moist sphagnum moss and clear plastic for air layering

Air Layering Cannabis: Rooting a Branch Before You Cut It

Air layering grows roots on a cannabis branch while it is still on the plant. Learn how growers do it and how it compares to taking cuttings.

White salt crust on the soil surface and rim of a potted cannabis plant

Salt Buildup in Cannabis Soil: Signs and Fixes

White crust on the pot or soil and burnt leaf tips can point to salt buildup. Learn what causes it in cannabis and how growers leach it out.

Outdoor cannabis plants growing along a wood-chip-mulched hugelkultur bed, with cut logs stacked at one end.

Hugelkultur for Cannabis: Growing on a Buried-Wood Mound

What a hugelkultur mound is, which woods to use and avoid, how to layer logs, brush and compost, when to build it, and the known limits of the method.

Sealed bokashi bucket with a spigot on a porch step beside a cannabis garden bed.

Bokashi for Cannabis: Fermenting Kitchen Scraps for Garden Soil

How bokashi ferments kitchen scraps, how it differs from compost, how deep to bury it in a cannabis bed, and how long to wait before you plant.

Chopped banana peels on a compost pile with a garden fork and a cannabis plant behind

Banana Peels For Cannabis Plants: What They Really Add

What banana peels add to cannabis soil, why burying them raw can tie up nitrogen, what banana peel water does, and the better way to use the peels.

Young cannabis plant in a garden bed with compost and black biochar granules worked into the soil.

Is Biochar Good for Cannabis Plants? What Home Growers Should Know

What biochar does in cannabis soil, what extension trials found, how to blend it with compost before use, and why homemade char is not advised.

Soil probe, bucket and soil sample bags laid out on a potting bench.

Soil Testing for Cannabis Gardens: How to Sample and Read Results

How to take a garden soil sample the right way, send it to an extension lab, and read nutrients and organic matter before you plant cannabis.

Garden bed of blooming crimson clover and oats

Cover Crops for Cannabis Beds: What to Plant Between Seasons

Which cover crops suit an outdoor cannabis bed, when to sow rye or clover in fall, and how to cut them down in spring before you plant out.