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January-March 2013 | NO 2 A Garden View Construction ahead! Plants can grow people Tree care tips What do plants see? Tu B’Shvat for families From the Director Contents Gardens News... Gardens News... Dear Readers, 2 From the Director We’ve come to the end of a busy and fruitful year and 3 Gardens News are now gearing up for a truly momentous year of new Major construction New exhibits Major construction ahead! Plants from the Balkans and the Caucasus will soon construction! New scholars We are excited to announce that construction will begin adorn a new bypass path for the disabled between shortly on two flagship projects which, when completed, the Garden’s Lake and entrance area and the main 4 Ahead of us lie the creation of a Children’s Discovery Plant of the season will cement the Gardens’ place on the national map of section of the Gardens. The project has been funded Path and the expansion of the Dworsky Tropical Common Cyclamen ‘must see’ attractions! by the Spitzer family of New York, via the Jerusalem Foundation, with additional support from the Israel Conservatory. We hope that both projects will upgrade 5 Gardening tips the visitor experience significantly and bring many more Encouraging children to let nature enchant them is the National Insurance Institute and the Government Tourist visitors to the Gardens. Caring for your trees idea behind the Children’s Discovery Path, described Authority. 6 New plants at the Gardens in the last issue of A Garden View. The interactive path During the past year, we carried out several physical will run through JBG’s North American and Australian The Bonsai exhibit has been given a major physical and projects. We refurbished the Sunlight Pool (now home Scholars sections, providing stations along the way that will conceptual facelift, thanks to a gift from the Japanese to endangered native water plants), as well as the encourage discovery through play. The stations will Agon Shu. The new exhibit includes a path that winds main Cohen Family Lake, to which we added a grass 7 From our volunteers highlight the remarkable way in which plants have between the Japanese cherry trees, a symbolic stone amphitheater and a temporary performance stage used Spotlight on Zmira Ofir adapted to different environments and will convey how and water display and a greenhouse which will exhibit during our annual June concert series. We created a new important they are in the web of life. cold-sensitive trees and provide space for bonsai exhibition area for our Bonsai collection, a picturesque 8 Books and Internet workshops. seating area called Oak Walk along the Bible Path, Flora Palaestina goes online, plus What A The Dworsky Tropical Conservatory is already closed and a landscaped bypass path for the handicapped. In Plant Knows to the public in advance of major expansion and Two new scholars– Katy Elton and Toby Bull – have addition, our gardeners replanted a number of botanical renovation and its plants are being moved to temporary begun working at JBG, thanks to support from JBG’s UK subsections. All these projects added to the regular work 9 Bulletin board accommodation. Friends. Australian scholar Natalie Simmons returned of our gardening and maintenance teams, and I thank Adopt a plant in danger home, having created a superb collection of JBG them for their commitment. Artist’s impression of the expanded Dworsky Tropical Conservatory plant photographs for our developing database. Ozzie 10 Events Trevor Seppings stayed on until December. His help in Our marketing, sales and education departments identifying eucalyptus and other Australian species at ensured that the Gardens function as a hub for human, 11 Family and children’s page JBG was invaluable. as well as biological, diversity. Last year saw a dizzying Tu B’Shvat array of festivals, exhibitions and activities and the More than 110 people packed the Gardens’ auditorium launch of new social action programs to add to our 12 Plants can grow people for a one-day seminar on oaks, which included a tour successful Jewish-Arab coexistence program for schools The Gardens and the community of the Gardens’ important oak collection. (see page 12). Thank you to our 2012 donors The Chicago Botanic Garden’s laboratory staff is Our science team has meanwhile been busy working on helping JBG Head Scientist Dr Ori-Fragman Sapir with our advanced database, expanding our collection of rare Editors: Sue Surkes and Levana Fink molecular analysis of the rare and endangered Vartan’s and endangered species, and carrying out or hosting Cover plans: Tsurnamal Turner Landscape Architecture, Building work is always messy. While we will try to keep Iris. Named after the doctor who found it more than a research projects. Ido Bruno Design disruption to a minimum, we advise visitors to check our century ago, this mountain-loving plant grows only in Dworsky Tropical Conservatory plan: Shlomo Aronson website before visiting to avoid disappointment. Various Israel. The Vartan family of England is funding research Architects into this species at JBG, with the aim of ensuring its Botanical illustration: Esther Huber areas of the Gardens will be closed at different times and See you at the Gardens! Photography: Ori Fragman-Sapir, Judith Marcus, Yoni Passi, there will be changes to our usual program of activities. preservation. Natalie Simmons, Ofri Bar and Yedidia Yerushalmi איריס הסרגל Vartan's Iris Oren Ben-Yosef Graphic Design: Keren Shapira-Buzaglo Translation: Ofer Grunwald, Professional Translation Services Director General This magazine was produced with the assistance of the Friends of the Botanical Gardens and their editorial team, Sara Adar, Hannah Cohen and Nehama Foerster Address: 1 Yehuda Burla Street, Nayot, Jerusalem Mailing address: The Jerusalem Botanical Gardens, Hebrew University Givat Ram Campus, Jerusalem 91904 Telephone: 02 6794012 | Fax: 02 6793941 www.botanic.co.il Opening hours: Sundays through Thursdays 9.00-17.00 Fridays and holiday eves 9.00-15.00 Sabbaths and holidays 9.00-17.00 2 3 From the Head Scientist From the Head Gardener Common Cyclamen Tips for tree care in hilly regions The National Plant of Israel By Eli Becker Trees such as almonds and the Judas tree, whose flowers By Dr Ori Fragman-Sapir Trees provide the framework for our gardens, parks and bloom on the previous year’s branches, should not be nature sites. They may look strong, resistant and able to pruned until flowering has ended to ensure their proper Translated by Dr Susan Hattis Rolef stand up to almost anything. In fact, they are extremely bloom. sensitive to environmental conditions and will respond to The Common Cyclamen (Cyclamen persicum) is Israel’s them, sometimes at shocking speed. Wood chip mulching in the fall will prevent winter national flower – one of 20 species in a genus represented The Botanical Gardens’ professional staff has to cope with weeds and will limit the need to weed later on in the year. mainly around the Mediterranean basin. One species thousands of trees that have come from all over the world Mulching also maintains moisture in the soil near the trees managed to penetrate the Alps and reach southern and from a variety of climatic and geological regions. for an additional month or more into the spring. This means Germany, several species are common up to the Caucasus, irrigation can be delayed for longer and water use and and a single species grows in Sudan. Below are some important tips of the trade to help you look costs kept down. Remember that wood chip mulch has to after your own trees and to get the best out of them where be replaced every two years. The wild Common Cyclamen is the progenitor (parent) of shape, flowering and other factors are concerned. most cultivated cyclamen varieties, the most common of The timing for tree planting is important and sometimes which is Cyclamen persicum var. giganteum. Cultivars have Gentle thinning of evergreen tree canopies is been developed by selecting and cross-breeding plants even critical for success. Deciduous trees from temperate recommended in the fall to prevent branches from breaking (cold) regions of the world should be planted in late winter, with desired traits, and by multiplying genetic material in under the weight of winter snow. the cell several times over to create large flowers. when they are bare of leaves and will not succumb to frost This period is also suitable for planting conifers. Other trees Cyclamen has many horticultural advantages; beautiful, Pruning of deciduous trees should be carried out should be planted in early spring after the cold spell has plentiful flowers, varied foliage, a long flowering period towards winter’s end. Pruning requires expertise, so choose ended, but no later than this. Young plants need time to (October to May), and - crucially - the ability to flower in professionals to do it. Incorrect pruning can harm trees establish themselves before the hot, dry season sets in. the shade. and allow diseases and pests to penetrate. However, failure to prune will allow the number of weak points along the Small gardens often have too many trees, with the result In recent years, nurseries have been selling wild Common branches to increase. Cyclamen tubers. Unlike the cultivated varieties, these that one tree shades out another and none will develop flower every year. Low maintenance, water-wise and properly. It is important to plan the number of trees It is especially important to prune young trees so as to according to the size they will reach at maturity. suitable for all conditions, from total shade to full sun, shape the structure and canopy and avoid problems in the they will do best with a little extra watering from fall to future.

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