Aloe arborescens (Aloaceae) Date of harvest : October 2008. Locality : Ex Hort. Sowing : The seeds germinate very well but may damp off if overwatered. Use a mixture of river sand, compost and soil to sow seeds in. Sprinkle the seeds evenly on the surface and cover with a layer of small pebbles. The pebbles help the seedlings to stay upright and prevent damping off. Keep seed tray in a dry warm corner and do not allow to dry out. Transplant the seedlings after one year.