Cistus 'Bennet's White'

Cistus ‘Bennet’s White’

Enormous white flowers are incredible while they are born from May to July on this classic rockrose. Resinous, deep green foliage is fragrant, especially as the temperature climbs. The 4″ wide pure white flowers that appear daily remind many of Romneya coulteri Matilija Poppy. To 4′ x 4′ in 5 years for full sun and well drained soil with light summer water. Extremely showy in bloom. Moderate deer resistance.

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Cistus libanoticum ssp. major

Unique in that the leaves are thin and willow-like they still harbor plenty of waxy perfume. A somewhat gnarled looking shrub over time with plenty of character. In May-July 6″ long stems erupt from the top of the shrub, elongate and produce clusters of large pure white flowers. Blooms for an extended period but each open flower lasts only one day but is replaced by a steady supply. Full sun and average to enriched soil. Water to establish then less to none in subsequent years. In time it develops a shredding, twisted, gray trunk. Moderate deer resistance. Aromatic on warm days. Mixes very well with Arctostaphylos as well as Ceanothus. A really great rock rose. Tp 3′ x 3′ in 5 years.

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Cistus x 'Snowfire'

Cistus x ‘Snowfire’

A large growing improved rockrose with huge white flowers with a large red basal blotch on each petal. Deep green foliage takes on maroon tints in cold weather. To 4′ tall and 6′ wide forming a dense outline. Blooms May to July in a daily procession of flowers. Each blossom is 3″ across. Excellent cold hardiness to 5ºF or lower. Grows quickly in average, well drained soil Avoid overly enriched sites which will decrease cold hardiness and lead to rank growth. Lean conditions produce the most dense and cold hardy shrub. Great for rough areas in the back ground. Completely drought adapted- no summer water required. Give it room to spread. I’ve had great success with this shrub on a hillside of rocky clay soil that is strictly unwatered in summer. It and all Cistus present the ability to compete with invasive weeds such as introduced grasses. These invasives quickly out compete many things, but not Cistus. Water deep and infrequently or once established not at all. Rock roses can be prone to breaking in ice/snow. Usually, it is just cosmetic and the plant recovers. Our selections we have observed through many snow events (including a 16″ fall in 2008) and have observed no breakage. One of the very best Cistus selections.

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Cistus x bornetianus ‘Jester’

We’ve grown a LOT of pink flowered rockrose. This is our favorite by far.  The large flowers are clear pink on the edges fading to near white around the boisterous orange/yellow center. This gives each cupped flower a luminous backlit effect. It blooms profusely and the elegant but subtle flower color virtually marries its gray leaved backdrop. Excellent.  To 3′ x 4′ in 5 years ‘Jester’ exhibits great cold tolerance as well as drought adaptation. Full sun and well drained soil with little summer water once established. The large (3″) Pink flowers appear for 4-6 weeks in late spring. Fragrant foliage is waxy and could be unpalatable to deer. Long lived for this genus. Colorful, tough plant. Combine with Ceanothus ‘Victoria’ and Halimium ‘Sarah’. Excellent performance on steep slopes.

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Cistus x canescens 'Albus'

Cistus x canescens ‘Albus’

A tough, cold hardy, and spectacular Rockrose in bloom. Gray foliage is a great backdrop to the huge (3″) pure white flowers with a central zone of yellow stamens. The flowers appear daily but en masse for weeks in April to early June. Moderate growing evergray shrub to 3′ x 5′ in any well drained soil. Extremely drought adapted and requires NO supplemental irrigation when established. Avoid overly enriched soils which will lead to rank growth and quite a bit less cold hardiness. At our wholesale nursery this wonderful shrub has not suffered cold damage down to 5ºF. Lean conditions increase hardiness. Hellstrips, low water garden sections. Hot dry biomes. A great rockrose.

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Cistus x crispatus 'Warley Rose'

Cistus x crispatus ‘Warley Rose’

A fantastic low growing Rockrose with superior pink/purple (Pinkle?) flowers for an extended period in May-July. To just 18″ tall it spreads to 3′ wide in average to enriched soil in full sun. The crinkled sage green foliage emits a sweet perfume, especially if you stick your nose right up to it- but mostly it is noticeable on warm days. Its spicy and sweet and adds to the good feelings this very cold hardy selection gives gardeners. One of the last plants to be marauded by deer it makes a great border shrub for rural areas as well. Drought adapted when established, give it one or two good soaks in summer to keep it fresh. Well scaled plant that seldom requires pruning. This selection has survived 0ºF with minor leaf burn and a full recovery by bloom time. Flowers that each last one day come in a weeks long promenade. Rock gardens, hells strips.

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Cistus x dansereau 'Jenkyn Place'

Cistus x dansereau ‘Jenkyn Place’

After growing a whole bunch of Cistus this variety has risen to the top. Upright growing deep green evergreen shrub to 5′ tall and 5′ wide. The thin deep green leaves have the sweet fragrance of balsam. Beginning in May a constant procession of 3″ white flowers with a red basal blotch on each petal. Each flower lasts a day but there is a constant supply waiting in the wings. Full sun and average well drained soil. Tolerates clay soils well. If you give it a touch of supplemental summer water it will often extend the bloom season all the way until September. Exceptionally cold hardy. One of the finest rock roses.

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Cistus x ladanifer 'Blanche'

Cistus x ladanifer ‘Blanche’

Very large growing deep green aromatic Cistus with enormous clear white flowers for an extended period in May-July. The flowers are so large they are reminiscent of the Matilija Poppy (Romneya coulteri) and they virtually obscure the foliage in bloom. To 8′ tall x 8′ wide very quickly. The winding and shredding trunks that develop are cinnamon brown and have a wild, gnarly appearance with age. Excellent cold hardiness especially if you avoid rich, amended soils. Native unimproved soils that drain are best. Handles clay soils well especially if on a slope. Completely drought adapted, no summer water is required. The resinous deep green foliage emits a sweet balsam aroma on hot days.

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Cistus x obtusifolius

Cistus x obtusifolius

Compact white rockrose is a fantastic hybrid that gives this shrub several outstanding attributes. A dense compact habit heavily clothed in small deep green leaves. To just 3′ tall and 4′ wide forming a dome. This dense habit resists splitting in ice and snow. From May to July a massive constant procession of pure white flowers. Often bloom is so heavy that it obscures the foliage. Each flower lasts just a day but is replaced by a seemingly never ending supply. In autumn the spent flower calyxes turn bright orange red and are showy- especially when backlit by the sun. Great landscape shrub for hot sites in any well drained soil that does not become boggy. Avoid overly enriched soils for a more cold hardy and dense growing plant. Easy Cold hardy to near 5ºF. Little to no summer water.

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Cistus x pagei

Cistus x pagei

Rockrose are famous for the sweet balsam fragrance emitted from their foliage. The chemical ladanum is responsible and the heart shaped thick leaves of this hybrid are drenched with it. This chemical imparts a certain amount of fire retardant. Hot days bring a wave of perfume from Cistus x pagei long after its profuse display of pale pale pink flowers. Its vaguely pink from a distance.  Very heavy bloomer. To 5’x 5′ in 5 years. Exceptionally hardy to cold and very very drought tolerant as well. Tolerates subfreezing wind and temperatures near 0ºF with no harm. Excellent low care shrub for rough areas. Full sun and well drained soil. Light summer water to establish. Moderate deer resistance. Excellent shrub for rural areas. In time it develops gnarled trunks with a shredded exterior. Prune if needed AFTER flowering.  Rugged, beautiful, fragrant shrub.

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