Fortunella x crassifolia
Fortunella x crassifolia
Safety & Hazards
None known
Cultivation Details
Succeeds in a range of climates from warm temperate to subtropical and at moderate to higher elevations in the tropics. When dormant, the plant tolerates temperatures down to between -5 and -10°c[1]. The young growth in spring, even on mature plants, is frost-tender. Prefers a moderately heavy loam with a generous amount of compost and sand added and a very sunny position[1]. Prefers a pH of 5 to 6[1]. Plants are intolerant of water logging[1]. Kumquats are hardier than the various Citrus species since they cease growth when temperatures drop below 13°c but, for best results, they are best grown in a climate where temperatures do not fall lower than between 4 - 10°c[2]. This is because the fruit is sweeter when it ripens in warm conditions[2]. There are some named varieties[1].
Propagation
Seed - best sown as soon as it is ripe. When they are large enough to handle, prick out the seedlings into individual pots and grow them on until large enough to plant out. Cite as: Tropical Plants Database, Ken Fern. tropical.theferns.info. 2026-02-20. <tropical.theferns.info/viewtropical.php?id=Fortunella+x+crassifolia>
Pollinators
Data unavailable
References
- [1]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.
- [2]Growing Unusual Fruit. — Simmons. A. E. · David & Charles; Newton Abbot. · 1972 · ISBN 0-7153-5531-7 ↩︎A very readable book with information on about 100 species that can be grown in Britain (some in greenhouses) and details on how to grow and use them.
- [3]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.