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Skalničky 4/2001- The Rock Garden Plants

Newsletter of the quarterly Bulletin of

The Rock Garden Club Prague

Klub skalničkářů Praha, Maříkova 5, 162 00 Praha 6, Czech Republic

 

Seed exchange: is open to all members in good standing for the year 2001. The seed list is distributed together with the Bulletin vol. 4 in December. Instructions are enclosed there. Orders for seeds are also accepted by Mrs. Zdenka Tichá, Kodaňská 59, 101 00 Praha 10, Czech R.

Annual meeting: Saturday, 16 February, 2001, 9:00 to 15:00 o´clock. CSVTI, room 319, Lávka 5, Prague 1. (lecture: Z. Reháček - Plants from New Zealand)

Shows: including plant sale in the traditional show church garden on Karlovo náměstí - Moráň, Prague 1, 10 a.m. to 6 p.m. (dates are also shown on the RGC Calendar under "Výstavy"), past bulletins and book sale

  • Early Spring Show: 1 - 7 April, 2002
  • Main Spring Show: 8 - 25 May, 2002
  • Autumn Show: 9 - 21 September, 2002

Lectures: (17:00, Na Novotneho lávce, Prague 1)

16 January - Josef. Jurásek: Autumn in Nepal

20 March - Jan Burgel: 400 km along Central Himalaya for Saxifrages

17 April - Vojtěch. Holubec: Flora of Sierra Neada and White Mts.

Trips and visits: 6 domestic bus trips (proposed) to rock-gardeners

Romanian Mts. 29.8-6.9.2002, programme will be available on request from the secretary, Eva Karasová, Jiráskova 1611, 252 63 Roztoky u Prahy (02/20911314, 0606/354323)

Membership dues reminder: 20 USD/EUR, plus 5 USD/EUR for the seed exchange.

Česká spořitelna, Křenova 7, 162 00 Prague 2 Petřiny, account number: 169508379/0800. Payable to: Klub skalničkářů Praha. From: The name plus a shortened address, i.e. city and country (necessary to identify the sender). International Money Orders or Draft Notes, both from banks, are accepted. Cash is possible, but at your risk. Please, make your name and address readable. We always have unidentified cheques with missing address! If you do not receive bulletins, let us know also time and way of your last payment. Skalnicky no. 2 and later is sent only to members in good standing.

Editor's note: Contributions to the Bulletin are very welcome. Please send a manuscript printed on paper and on a diskette as a text file or preferably in Word. Articles will be translated to Czech. English summary is welcome. Please enclose colour photos 9x13 cm or slides 24x36 mm, they will be returned. Editor: Dr. Marie Lhotská. Ruská 158, 100 00 Praha 10.

Advertisements:full page for 3.000 Kč. It is possible to request 1/2, 1/3, 1/4, 1/8 of a page.

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 P. 137

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 - by dividing older plants. If propagated by seed, the shape of the stems and leaves are different and it lacks the higher growth of the type plant.

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 near Honaz village, at sites reaching 1460m and more. In this locality, however, the author found only a few corms. The species with pure light blue flowers and thin darker stripes is one of the nicest kinds. The author believes it is the most suitable art

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 more vigorous. In a suitable place it soon forms a nice group. In the garden it requires a warm, well-drained site.

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 S. Barta P. 157

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 P. 159

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 in a well-drained soil. With the recumbent growth, it is specially nice-looking in sites, where the stems, with big conspicuous red and violet flowers, can fall over boulders. In Mr and Mrs Benes' garden situated in Central Bohemia it is a winter hardy species.

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.



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