Food scraps: avocado peel and stones, onion skins, carrot tops, pomegranate rinds, beets, walnut hulls, rhubarb.

Plants: eucalyptus, ivy, juniper, mahonia, apple tree (leaves and bark), prunus tree leaves and bark, oak leaves, bark and galls, blackberry, willow, elm, alkanet and nettles.

Flowers: Marigolds, Coreopsis, Hollyhock, Cosmos, Dahlia, Hibiscus, St. John's Wort, Daffodil, Goldenrod, Dandelion and roses