Black Swallow Seed Starter Soil Mix Size:18L / 4.75 GAL It has a low bulk

It has a low bulk density and is neutrally buoyant meaning it won’t sink to the bottom of the soil or float to the top

and water infiltration and drainage

Learn more about our Ultimate Spinner Base and order the optional Wheel Kit to take it on the move

The 10LB version contains 5 - 2LB bags for mixing smaller batches

Black Swallow Seed Starter Soil Mix Size:18L / 4.75 GAL It has a low bulkWe've been asked for a light seed starting mix, so this has now been added to our line up, though it may not be available all year as we make this on a limited basis. This mix contains a fine peat, fine perlite, wollastonite, soft rock phosphate, volcanophos, Thermx 70, endomycorrhizae , dolomitic lime, basalt, fish compost and worm castings. This mix has also been tested and works well for soil blocking.