Seed propagation of annonas results in great variability in the orchard and is not recommended. Materials need to be propagated vegetatively to produce more uniform-yielding trees by grafting of the desired variety (scions) onto appropriate rootstocks.
Selection of Scions and Rootstocks:
Select rootstock trees that combine the following characteristics:
• Vigorous and prolific trees . . . → Read More: How To Grow Annona Seed Crops
Relative of Chinese Rhubarb. Photo by H. Zell on Wikimedia Commons
Common Name: Chinese Rhubarb.
Known Hazards: The leaves are poisonous. This report probably refers to high levels of oxalic acid found in the leaves. Perfectly safe in moderate quantities, oxalic acid can lock up certain . . . → Read More: Rhubarb
Cascara Picture from Wikimedia Commons
Common Name: Cascara Sagrada.
Known Hazards: There is the suggestion that this species could be mildly poisonous.
Habitats: Rich bottom lands and sides of canyons, usually in coniferous forests.
Range: Western N. America – British Columbia to California.
Physical Characteristics . . . → Read More: Cascara
Buckthorn Photo From US National Park Service invasive plants factsheet.
Common Name: Common Buckthorn.
Known Hazards: The fruit is purgative but not seriously poisonous. Other parts of the plant may also be poisonous.
Habitats: Fen peat, scrub, hedges, ash and oak woods, on calcareous often dry . . . → Read More: Buckthorn
Lesser Celandine by H. Zell on Wikimedia Commons
Common Name: Lesser Celandine.
Known Hazards: All parts of the plant are poisonous. The toxins are unstable and of low toxicity, they are easily destroyed by heat or by drying. The sap can cause irritation to the skin.
. . . → Read More: Lesser Celandine
Oak Photo by Jorchr http://commons.wikimedia.org/wiki/File:Svaneholm,_ek.jpg
Common Name: Pedunculate Oak.
Habitats: Often the dominant woodland tree, especially on clay soils and in the eastern half of Britain, but avoiding acid peat and shallow limestone soils.
Range: Europe, including Britain, from Scandanavia south and east to Spain, the . . . → Read More: Oak