Silvics of North America
Daves Garden
Garden Web World
Trees are good
Aggie Horticulture A&M University Texas
Garten-pur
Dyrkning
RHS plantfinder
Royal Forestry Society
Skovbrug
The Brazil Nut Homepage
Planteskoler
Lundhede Planteskole
Lønbæk Planteskole
Esveld
H. Kolster, Boskoop unusual and rare shrubs
Friesland Staudengarten
Eggert-Baumschulen
Pflanzenversand Hans-Günter Röpke (Tropiske)
