Skalničky 4/2001- The Rock Garden Plants
Newsletter of the quarterly Bulletin of
The Rock Garden Club Prague
Klub skalničkářů Praha, Maříkova
Seed exchange: is open to all members in good
Annual meeting: Saturday, 16 February, 2001, 9:00
Shows: including plant sale
Lectures: (17:00, Na Novotneho lávce, Prague
16 January – Josef. Jurásek: Autumn in Nepal
20 March – Jan Burgel: 400 km along Central Himalaya
17 April – Vojtěch. Holubec: Flora of Sierra
Trips and visits: 6 domestic bus trips (proposed)
Romanian Mts. 29.8-6.9.2002, programme will be available
Membership dues reminder: 20 USD/EUR, plus
Česká spořitelna, Křenova 7, 162 00
Editor’s note: Contributions to the Bulletin
Advertisements:full page for 3.000 Kč.
The RGCP Board wishes all members a great Christmas time, successful New Year, good health and full measure of enthusiasm.
Frontcover: Geum coccineum watercolour: M. Adamcová
Backcover: Geum montanum watercolour M. Adamcová
Excerpts from the Bulletin
The Early Show 2001 Jan Bürgel P. 135
As usually there were Saxifrages, bulb and tuber plants and other early spring flowers. We saw about 200 species and cultivars of Saxifrages, 3O species of bulbs and other plants. The Show was arranged by K. Lang and J. Novák and lasted from 30. 3. to 6. 4.
During the night of the 26th some exhibits were damaged by an unexpectedly low temperature. They lost the turgsor and their leaves and flowers were drooping. It was a very sad sight. After several warm days, however, they were as beautiful as at the beginning of the Show.
The names of the rewarded exhibits as well as the names of their authors are in the text.
Abies alba ‘Mladá Boleslav’ J. Kazbal
The wood was cultivated from a witches broom, discovered by Mr. Veselý in the area of the Jeseníky mountains. Sometimes it is offered under its cultivar name ‘Veselý’. It is a healthy, very old cultivar of a bushy, dense growth, getting 5cm larger every year. It grows well and has a pleasing colour.
The oldest specimen, a result of a spring grafting in 1982, can be seen on the photo.
Scirpus elegans ?M. Lhotská P. 139
A grass of low growth with spirally twisted leaves and stems has become popular over the last few years. It is called Scirpus elegans but the author was unable to find the name in any garden or botanical literature.
In the autumn she visited a garden in Bohemia and saw the same plant with fruits. Immediately she knew, why she was not able to identify it – it belongs to the Juncus family, not Scirpus. Scirpus plants have big dehiscent capsules similar to the fruits of Carex, while the non dehiscent capsules of Juncust plants are full of tiny seeds.
It is Juncus effusus and it’s cultivar name is Spiralis.
It is called Juncus effusus ‘Spiralis‘.
It likes wet locations but it can be also grown in well- watered sites. It is an interesting plant not just because of its shape and recumbent growth.
Juncus effesuscan only be propagated vegetatively
Synthyris stellata Marie Seidenglanzová P. 141
Mrs Seidenglanz cultivates the North American plant Synthyris stellata in her garden in western Bohemia at 480m. It flowers in the middle of March, at the same time as Saxifrages of the Porophyllum section and Eranthis hyemalis, and is very impressive in this association.
It grows in a half-shade situation on acid substrate.
It is a long lived plant in favorite conditions. In the garden of Mrs. Seidenglanz it is absolutely resistent. It does not even require a winter cover during dry frosts or severe winters. Sometimes, however, the leaves are partly harmed by sun. Mrs. Seidenglan’s oldest specimen is 8 years old. It does not yield fertile seeds but can be successfully propagated by careful division. She never takes the whole plant out of the soil, only a part of it. It can be propagated either after flowering is over or later during the summer and autumn on cooler days. The parts taken off are left in shade until they are properly rooted.
Moehringuia muscosa Pavel Kusák P.145
In the forests of the limestone mountains in Middle and South Europe there are vast mossy pillows with white stars – Moehringia muscosa. Although it requires shade /in nature/, the author keeps it in an open place on his rockgarden near Olomouc in Moravia.
It grows in normal garden soil between two big limestone boulders, which protect it’s lower part against sun and help to keep the soil damp. It could be also cultivated in the shade or half-shade of a grove. In these conditions the plant prospers, blooms and yields seeds. It can be propagated vegetatively by dividing larger clusters in early spring or autumn. The author, however, propagates only by seeds. He does not prick off the frail young seedlings, but plants the whole pot directly on the chosen site, when they get stronger.
Four perspective Crocusses from Turkey V. Lajn P. 146
The article about Turkish Crocuses, discovered by the author, concentrates on four species he either cultivates in the open or believes suitable to be grown in Central Bohemia.
/He however tries to cultivate other species/. The Crocuses brought from Turkey are: C. garganicus, C. baytopiorum, C. abantanesis and C. aerius.
The beautiful yellow and orange C. garganicus originates in high mountains. You never find it lower than at 1,000m. The rather small corm is placed deep in the earth, so the rain does not damage it. It is an ideal plant in the conditions ofthe author’s garden. It prospers both in sunny and half-shaded localities. It adds many new corms. In western Turkey and on Uludagu you can find it in three places. According to the author’s experience, the plants from Uludagu are more suitable for cultivation in the open.
C. baytopiorum was found on northern slopes
for growing in the open, but he prefers to grow it in the alpine house, as it adds new corms rather slowly.
C. abentansis– endemit from Abant Lake – is
Under the Zigana-Gecidi Pass in the Kankanli Daglari mountains Mr. Lajn discovered several mostly autumn species. Only one of them was a spring crocus – C.aerimus. In his garden it prospers in a site where it gets morning sun, but is in half-shade during the day. He planted it into heavy damp soil mixed with white river sand. The corms were covered by partly decayed forest litter with the addition of dolomitic limestone. He does not insist all the componenents are necessary, but they certainly do not do any harm. It is an early species with striking light violet blooms and darker stripes.
Geum in my garden D. Heltzerová P. 150
While the species G. reptans and G. pentaphylum do not
prosper in Mrs. Heltzer’s garden, others – G. montanum, G. coccineum, G. x hybr. hort and Geum triflorum – seem to like it.
She even succeeds in propagating them: the last three vegetatively by dividing the clusters. The results with G. coccineum and G. x hybr. hort reach 90%, with the last two a bit lower.
Leontopodium haylachinense var. miyabeanum
The author cultivates this Leontopodium species in his rock garden at the height of cca 460m. He planted it in 1955 in his travertin rock garden which gets sun from the morning until about 4 o’ clock p.m. Now the plant is quite big and last year it yielded fertile seeds that germinated. He does not use any winter cover, but keeps one specimen in the alpine house for the eventuality that his plant would perish. Some time ago, he propagated it vegetatively – by taking off a part of the cluster.
Primula petiolaris H. Stástková
Mrs. Stásková takes this plant for one of the most beautiful Primulas worth cultivating. In her opinion it requires the same conditions as Primula rosea and P. deorum.
In her garden the flowers were planted in two shaded places at the little lake: on the bank under a willow and in a little bog in the shadow of a hazel. In spring, however, when blooming, they get a lot of light.
An uncommon Dianthus from the Far East – A. a 0. Benes P.160
Mr and Mrs Benes cultivate an interesting autumn Dianthus they brought home from the Far East. It is called Dianthus amurensis. One of their specimens originated in a place near Vladivostok, where it grows on grassy slopes and in open rock crevices. The other one was found in the Ussuri area, growing on the bank of a little creek in an open mixed forest.
This species is valuable because of the time of blooming – from August to the beginning of frosts- when no other Diathus flowers. If we bought seeds in the exchange we can be sure, they are genuine. Mr and Mrs Benes propagate by seeds, sown in February. It is also possible to use cuttings. If we prefer the sowing, 80- 90% of the seeds germinate and the plants bloom the next year.
Dianthus amurensis prospers in a not too sunny or partly shaded locality
A trip to see New Zealand plants I Z. Reháček P. 167
In December 2 000 the author visited the South Alps of
New Zealand in South Island. He omitted the southern part of the island and began in the area lying in the middle of the South Island.
He did not go to the southern part because of its dubious weather, although he knew, that most of the rock garden species grow there.
The names of the localities, he visited during his excursion as well as the names of the plants can be found in the text.