PlantPeers
Back to Catalog
No image available
Ericaceae FAMILY

Arctostaphylos glandulosa

Arctostaphylos glandulosa

Edibility
2/5
Medicinal
0/5

Safety & Hazards

None known

Cultivation Details

HabitEvergreen Shrub
Growth—

Arctostaphylos glandulosa grows in a Mediterranean climate, with cool moist winters and hot dry summers[1]. The plant grows in the wild in gravelly-clay soils. The soil layer is typically less than 25cm deep, with a pH of 5.7[1]. Plants are shade-intolerant[1]. The plant produces a large lignotuber from 60 - 250cm in diameter - this is usually able to survive fires and produce new sprouts[1]. Seeds have a very hard seedcoat - they are dispersed by birds and mammals who eat the fruits and can remain dormant in the soil for many years.Germination does not occur until after a fire, and is triggered by an oligosaccharin leached from charred wood. Seedling success rates are low[1].

Propagation

Seed - best sown in a greenhouse as soon as it is ripe. Arctostaphylos seeds, especially if not sown fresh, are generally stimulated into germinating by one of two methods. The most effective is fire passing quickly over seeds that are lying dormant in the soil - this breaks down their surface coat allowing them to imbibe moisture when it next rains and then germinate. Alternatively, stomach acids act upon the seed coat when the fruit is eaten by various animals - the seed frequently passes through the gut unharmed and is deposited in a convenient pile of nutrients when the animal defecates - the seed will often still benefit from a period of winter cold before germinating in the spring. Both of these methods can be somewhat reproduced by the gardener - the seed can be placed under some straw which is then set alight - both seeds and ashes should be sown. Alternatively, pouring a small amount of nearly boiling water on the seeds (being careful not to cook them!) and then soaking them for 12 - 24 hours in warm water will have somewhat the same effect as stomach acids. Follow this treatment with a cold stratification at 2 - 5°c for 2 months[2, 3]. The seed will then usually germinate in 2 - 3 months at 15°c[4]. As soon as they are large enough to handle, prick the seedlings out into individual pots, being very careful no to damage the roots, and grow them on in light shade in a greenhouse or cold frame for at least their first winter, Plant out in late spring or early summer. Cuttings of side shoots of the current season's growth, 5 - 8cm with a heel, late summer to early winter in a frame. Takes one year[5, 6]. Layering in spring[3]. Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2026-02-20. <temperate.theferns.info/plant/Arctostaphylos+glandulosa>

Pollinators

Insects

References

  1. [1]Fire Effects Information System — http://www.feis-crs.org/feis/ ↩︎An on-line information site with comprehensive information on over 1,100 species of plant. Mainly developed to supply information on the effects of fire on plants and animals, it also contains a wealth of other information on the plants
  2. [2]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.
  3. [3]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.
  4. [4]Growing from Seed. Volume 2. — Rice. G. (Editor) · Thompson and Morgan. · 1988 · ISBN - ↩︎Very readable magazine with lots of information on propagation. An interesting article on Ensete ventricosum.
  5. [5]RHS Dictionary of Plants plus Supplement. 1956 — F. Chittendon. · Oxford University Press · 1951 · ISBN - ↩︎Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaced in 1992 by a new dictionary (see [ 200 ]).
  6. [6]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.
  7. [7]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.