
Berberis cretica
Berberis cretica
Safety & Hazards
All parts of the plant contain the alkaloid berberine - this is most concentrated in the roots, stems and inner bark, and least concentrated in the fruits. In small quantities berberine has a range of effective medicinal applications but, in excess, can cause vomiting, lowered blood pressure, reduced heart rate, lethargy, and other ill-effects. The fruit of most, if not all, members of this genus are more or less edible and can be eaten in quantity since the levels of berberine in the fruit are very low.
Cultivation Details
Species in this genus generaly prefer a warm moist loamy soil and light shade but they are by no means fastidious, succeeding in thin, dry and shallow soils[1, 2]. Some Berberis species (especially Berberis vulgaris) harbour the black stem-rust fungus (Puccinia graminis Persoon). This is a major disease of wheat and barley crops and can spread from infected barberries to the grain crop. The sale or transport of susceptible or untested species of Berberis is illegal in the United States and Canada[3]. This species has been found to be susceptible to the disease[4].
Propagation
Seed - best sown as soon as it is ripe in a cold frame, when it should germinate in late winter or early spring[5]. Seed from over-ripe fruit will take longer to germinate[5], whilst stored seed may require cold stratification and should be sown in a cold frame as early in the year as possible[6]. The seedlings are subject to damping off, so should be kept well ventilated[7]. When the seedlings are large enough to handle, prick them out into individual pots and grow them on in a cold frame. If growth is sufficient, it can be possible to plant them out into their permanent positions in the autumn, but generally it is best to leave them in the cold frame for the winter and plant them out in late spring or early summer of the following year. Cuttings of half-ripe wood, mid summer in a frame. Cuttings of mature wood of the current season's growth, preferably with a heel, autumn in a frame[5]. Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2026-02-20. <temperate.theferns.info/plant/Berberis+cretica>
Pollinators
Insects
References
- [1]Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. — Bean. W. · Murray · 1981 · ISBN - ↩︎A classic with a wealth of information on the plants, but poor on pictures.
- [2]The New RHS Dictionary of Gardening. 1992. — Huxley. A. · MacMillan Press · 1992 · ISBN 0-333-47494-5 ↩︎Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
- [3]Flora of N. America — http://flora.huh.harvard.edu/fna/ ↩︎An on-line version of the flora with an excellent description of the plant including a brief mention of plant uses.
- [4]Rust Susceptible Berberis, Mahoberberis, and Mahonia Plants — United States Department of Agriculture, Agricultural Research S · 2017 · https://www.ars.usda.gov/midwest-area/st-paul-mn/cereal-disease-lab/docs/barberry/rust-susceptible-berberis-mahoberberis-and-mahonia/ ↩︎A list of Berberidaceae that are considered to be susceptible to black stem-rust fungus.
- [5]Propagation of Trees, Shrubs and Conifers. — Sheat. W. G. · MacMillan and Co · 1948 · ISBN - ↩︎A bit dated but a good book on propagation techniques with specific details for a wide range of plants.
- [6]Hardy Woody Plants from Seed. — McMillan-Browse. P. · Grower Books · 1985 · ISBN 0-901361-21-6 ↩︎Does not deal with many species but it is very comprehensive on those that it does cover. Not for casual reading.
- [7]The Reference Manual of Woody Plant Propagation. — Dirr. M. A. and Heuser. M. W. · Athens Ga. Varsity Press · 1987 · ISBN 0942375009 ↩︎A very detailed book on propagating trees. Not for the casual reader.
- [8]Mansfeld's Database of Agricultural and Horticultural Plants — http://mansfeld.ipk-gatersleben.de/pls/htmldb_pgrc/f?p=185:3:4292127278597336 ↩︎Terse details of a huge range of useful plants.
- [9]Influence of extraction procedures on phenolic content and antioxidant activity of Cretan barberry herb — Kukula-Koch W.; Aligiannis N.; Halabalaki M.; Skaltsounis A. · 2013 ↩︎
- [10]Evaluation of the antimalarial and antileishmanial activity of plants from the Greek island of Crete — Fokialakis N.; Kalpoutzakis E.; Tekwani B.L. et al · 2007 ↩︎A survey of 65 species of plants for their anti parasitic activity,
- [11]Medicinal Plants of China — Duke. J. A. and Ayensu. E. S. · Reference Publications, Inc. · 1985 · ISBN 0-917256-20-4 ↩︎Details of over 1,200 medicinal plants of China and brief details of their uses. Often includes an analysis, or at least a list of constituents. Heavy going if you are not into the subject.
- [PFAF]Plants for a Future — pfaf.org ↩︎