fertilizer

Giant kelp Macrocystis pyrifero illustration from A Life on Our Planet by David Attenborough

Birds foot trefoil Lotus corniculatus with seed pod and individual flower and calyx

Lesser trefoil Trifoilum dubium botanical illustration

Pen and ink illustration of Bladderwrack Fucus vesiculosis showing a large area of plant

Horseshoe crab Limulus polyphemus wayercolour showing dorsal view of top of shell, cut to white

Dead leaves rotting and decomposing into compost from newly fallen to decomposed and down to small leaf patricles like compost

Common comfrey Symphytum officinale plant with details of pink and blue flowers

Three illustrations showing compost as it degrades into organic matter, from recognizable leaf litter through to earth like mulch

Set up with two compost bins in rotation

Eight steps showing how to build a compost bin from planks