Common Name:

General Information

Cistus populifolius is a much-branched, evergreen shrub of dense, vigorous growth; it can grow 90 - 200cm tall, occasionally reaching 250cm[].
The plant has been shown to have significant medicinal properties, though we have seen no specific records relating to traditional use. The plant is grown as an ornamental in gardens.

Known Hazards

None known

Botanical References

,

Range

Mediterranean region - Portugal, Spain, France, Morocco

Habitat

Shady and cool ravines where the climate is not very cold, avoiding calcareous soils.

Properties

Medicinal Rating
Habit	Evergreen Shrub
Height	1.50 m
Pollinators	Bees
Cultivation Status	Ornamental, Wild

Cultivation Details

Cistus populifolius is native to the Mediterranean region, with its hot, dry summers and cool, moist winters. The genus is not very hardy outside the milder regions of the temperate zone, though this species is one of the hardier members of the genus, being able to tolerate winter temperatures dipping occasionally to around -10°c so long as the soil is fairly dry[]. A covering of bracken or leafy branches in severe weather is a help, and will often save plants that would otherwise perish[]. Plants are also somewhat hardier when grown in poor soils[]. The hardiest forms of this species are said to be those that grow in S.W. France around Narbonne - these have sometimes been given the varietal name 'narbonensis'[].
Cistus species generally grow best in a sunny position in a well-drained light sandy soil[, ]. This species prefers volcanic and silicolous soils[]. A calcifuge plant. Established plants are very drought tolerant[, ].
Plants are apt to be short-lived[].
Individual flowers only last one day but there is a long succession of them over several weeks[].
The flowers are very attractive to bees.
Dislikes pruning or root disturbance[, ]. Plants should be pot grown and then planted out in their final positions whilst still small[].
Plants in this genus are notably resistant to honey fungus[].
In cultivation, Cistus species will often hybridize freely with other members of the genus[].
Cistus species form ectomychorrizal roots, developing symbiotic relationships with various mychorrizal fungal species, mainly belonging to the genus Lactarius[]. This relationship aids the plants in water and nutrient uptake often helping the host plant to survive adverse conditions whilst, in exchange, the fungal symbiont is provided with access to carbohydrates.

Edible Uses

None known

Medicinal

We have no specific information for this species, but various of the species in this genus are used in traditional medicine in the Mediterranean to treat a range of conditions including colds and fevers; digestive problems and diarrhoea; skin diseases; rheumatism and other inflammatory diseases[, ].

Research has shown that Cistus species contain a wealth of medicinally active compounds such as terpenoids (including diterpenes, labdane-type diterpenes and clerodanes); phenylpropanoids (including flavonoids and ellagitannins); several groups of alkaloids; and other types of secondary metabolites[].
Considerable research has been carried out into the properties of these compounds - the following are some that apply to this species
The resin ladanum, secreted by the glandular trichomes of this species, contains a number of phytochemicals with antioxidant, antibacterial, antifungal, and anticancer properties[].
Aqueous extracts of the plant have shown antibacterial activity against Escherichia cColi[].
The plant has shown strong antimicrobial activity against gram-negative bacteria[].
Cistus populifolius extracts are able to inhibit the replication of the vesicular stomatitis virus (VSV)[].
Aqueous extracts of the plant were able to generate strong antioxidant activities in a dose-dependent manner, using several free radical scavenging methods[].
Aqueous extracts of the plant were shown to have significant, dose-dependent spasmolytic and analgesic effects[]

Other Uses

None known

Propagation

Seed - gather when ripe and store dry[]. Surface sow in late winter in a greenhouse[]. The seed usually germinates in 1 - 4 weeks at 20°c[]. Seeds in the wild are more likely to germinate following a forest fire[], so it could be worth giving the seedlings heat treatment by placing a small amount of fast-burning flammable material on top of them and then allowing it to burn for perhaps 20 - 30 seconds[]. Prick out the seedlings as soon as they are large enough to handle into individual pots. Grow them on in the greenhouse for their first winter and plant them out the in the following spring or early summer, after the last expected frosts[]. The seed stores for at least 3 years[].
Cuttings of softish to half-ripe wood, 8cm long with a heel or at a node, early to late summer in a frame. Roots are formed within 3 weeks[]. High percentage[].
Cuttings of almost mature wood, 8 - 12cm with a heel or at a node, early to mid autumn in a frame. High percentage[]. Lift and pot up in the spring, plant out when a good root system has formed[].
Layering in spring.