2007 UNIVERSITY OF DELAWARE 15 annua ³enefit wecome I welcome you to the University of Delaware Botanic ant sae catao Gardens’ spring plant sale. The plant sale is a fun event for all that heralds the onset of spring each year. I think you will fi nd many choice plants in the catalog listings and fi nd multiple options for all of the needy spots in your garden. We have included cultural information to aid in your selection of plants and recruited very knowledgeable individuals to assist you at the sale. The plant sale is a signifi cant event in many ways. It is a great opportunity to learn about and obtain exciting plants for the garden, to interact with a group of energetic and experienced volunteers at the sale, and to support the UDBG. Your support is a vote of confi dence in the gardens, Photo credit: Rick Darke its mission and the sponsored activities throughout the year. Contents I hope you participate and fi nd the days’ activities energizing and infectious. Please join us and revel in the prizes that you Welcome ......................................................... 2 Featured Plant ............................................ 4–5 will bring home to launch your garden into a new year. Plant Descriptions .................................... 5–14 The goals of the sale are to educate consumers about new Plant Sale Patrons ......................................... 17 plants and to broaden the public’s appreciation of the variety Plant Sale Advertisers ..............................17–18 of plants available by offering unusual and diffi cult-to-fi nd plants. As consumers learn about these outstanding plants, Mission and growers develop propagating stock, many of these The University of Delaware Botanic Gardens plants will become part of the plant palette available through contributes to an understanding of the the commercial trade. changing relationships between plants We hope you enjoy the UDBG’s plant sale offerings! and people through education, research, extension, and community support. This understanding instills an appreciation of plants in the landscape and natural environment. Dr. John Frett University of Delaware Botanic Gardens Director UNIVERSITY OF DELAWARE 2 2007 SPRING PLANT SALE CATALOG 2 UNIVERSITY OF DELAWARE PLANT SALE 2007 CALENDAR Thursday, April 26, 5:00 – 7:00 pm Patron Preview Sale and Reception Friday, April 27, 8:00 – 10:00 am UDBG Friends’-Only Admission Friday, April 27, 2:00 – 7:00 pm UDBG Friends’ & Pre-order Pick-up Admission Saturday, April 28, 9:30 am – 4:00 pm General Admission Plant Sale All events are located inside the fenced-in area across from Fischer Greenhouse on the University of Delaware campus (north of the University of Delaware football Educational Events stadium, adjacent to the Blue Ice Arena). The plant sale • Plant Sale Highlights is organized by the Department of Plant and Soil Science faculty, staff and students in conjunction with the UDBG Tuesday, March 20, 7 – 9 pm, free and open to public Friends and volunteers. Location: Girl Scout building, located off College Avenue, adjacent to railroad bridge, and next to Townsend and Worrilow Halls on the University of Delaware’s Newark Pre-order Plants Deadline, Monday, April 9, 2007 Campus. An order form is available in this catalog (see page 15) and The UDBG Friends generously sponsor a lecture highlighting on-line at: http://ag.udel.edu/udbg. Please complete the plants featured in the plant sale. UDBG Director John Frett form and mail to the address listed on the form. will present many of the plants offered in the catalog and at Pre-orders may be picked up on Friday, April 27, 8- the sale. This is also an opportunity to ask questions about 10 am (members only) or 2-7 pm, and on Saturday, these plants and other garden topics. Refreshments served. April 28, 9:30 am-4:00 pm in the “Pre-order Pickup” area. Additional plants may be purchased during these • Pruning Demonstration times. UDBG Friends’ members receive pre-order priority; Tuesday, March 27, 4:30 – 6 pm otherwise pre-orders are processed in the order received. $5 Friends Members; $10 Nonmembers Plant numbers are limited so we encourage you to send your Location: Fischer Greenhouse order in early and/or join the UDBG Friends. Orders cannot Master Gardener Clyde Roberts will provide an overview be shipped; all pre-orders must be picked up. of pruning basics that will include when to prune, how to prune, equipment to use, and other valuable information. Catalog on the Web Then he will take you into the UDBG gardens and The plant sale catalog is available on the Web at: demonstrate how to properly prune on some of the plants http://ag.udel.edu/udbg/events/annualsale.html that will be offered in the Spring Plant Sale. Maximum: Plant orders cannot be accepted on the Web. All pre-orders 20 people. Pre-registration required. Register on Pre-sale must be mailed with an enclosed check to the address Pre-order form. indicated on the order form. Credit cards will be accepted at • Guided Walk of 2007 Plant Sale Highlights the sale. Wednesday, April 18, 4 – 5:30 pm, free and open Benefi ts of membership in the UDBG Friends to the public Location: Meet at Fischer Greenhouse entrance The UDBG Friends’ members-only Director John Frett will take you on a guided walk to show admission to the sale you UDBG landscape size plants that will be offered in the will be Friday morning from 8:00 – 10:00 am. Those who join plant sale. Maximum: 35 people. Please call (302) 831-0153 for the fi rst time will receive a free perennial. UDBG Friends to register. can pick up pre-orders and/or purchase plants during this time. To join, refer to the membership form in this catalog or call (302) 831-0153. 2007 SPRING PLANT SALE CATALOG 2 UNIVERSITY OF DELAWARE 3 featured ant Photo credits, this page: John Frett Lilacs The Fragrance of Spring Lilacs made their way to the U.S. in the early 1600’s with the colonists. Long among gardeners’ favorite plants, lilacs are cherished for Syringa laciniata both their fl oral display and Cutleaf Lilac fragrance. So alluring is the fl ower fragrance, it is often reproduced for perfumes. Early selections were limited primarily to the common lilac, but the fragrance and fl oral display were stunning even then. Pyramidal, upright Syringa reticulata clusters, called panicles, are typically produced on the end ‘Ivory Silk’ of the stems. Flowers range from white to various shades of lavender, pink-lavender, to pink, deep pink, and near red. There are both single and double fl owered forms, any and Latin Name Common Name Mature Size Light Soil Pot Size, Plant Size Price all make a fi ne cut bouquet. When choosing one lilac over another, fl ower, color, fragrance, size, and timing should inform your decision. Syringa (microphylla ‘Superba’ × meyeri ‘Palibin’) ‘Bailsugar’ Sugar Plum Fairy® Lilac 4-6' d 1 gal, 2' $15.00 Lilacs are easy to grow and show great versatility in the Introduced by Bailey Nurseries, this plant has a compact, mounded habit. Plants have small landscape. The only signifi cant cultural factor to consider is foliage and a well-branched habit that does not require extensive pruning. Abundant, rosy- extended periods of heat during the summer, which is not lilac fl owers with a traditional heady lilac scent appear in late spring and early summer. The so much an issue in the mid-Atlantic region. Plants grow and foliage is disease free. fl ower best in full sun and moist, well-drained soils. In part Syringa × hyacinthifl ora ‘Anabel’ shade, plants may show reduced fl ower production; in drier Early Flowering Lilac 6-9' d 1 gal, 1-2' $15.00 sites, plants demonstrate reduced growth. Several selections Rated one of the best early fl owering pink lilacs, with fully double fl owers. Rather than four offered in the sale perform beautifully in these less than- petals per fl ower, ‘Anabel’ produces eight, imparting a much bolder fl oral display. The fl owers ideal-situations. Good air circulation avoids moist foliage, produce an appealing fragrance and the foliage is free of mildew. which can lead to powdery mildew, although this is more Syringa × hyacinthifl ora ‘Mt. Baker’ severe on earlier cultivar introductions. Most lilacs grown Early Flowering Lilac 10-12' d 1 gal, 3' $15.00 today have good to excellent powdery mildew resistance. Early fl owering lilac is the earliest of all lilacs to fl ower, typically emerging 7 to 10 days before the common lilac. Early, pure white fl owers terminate branches like candles on a cake. The Pruning lilacs helps reduce the incidence of mildew and very fragrant fl owers are a delight to cut and bring inside so they can be appreciated. This provides for better fl owering. The general recommendation cultivar has been selected for mildew resistance. for pruning of all lilacs is to prune after fl owering, as lilacs Syringa × hyacinthifl ora ‘Maiden’s Blush’ fl ower on last year’s stems. When pruned in the early Early Flowering Lilac 8-10' d 1 gal, 3' $15.00 summer, new fl owers will develop for the next year. Pruning The early pink-lavender, fragrant fl owers appear in mid- to late April. The foliage is mildew late in the year results in the removal of some or all of the free and turns burgundy in the autumn, providing color in the fall garden, unlike most lilacs. fl owers for the coming season. When pruning the S. vulgaris Syringa × hyacinthifl ora ‘Excel’ and related types, select individual stems to be removed. Early Flowering Lilac 8-10' d 1 gal, 1-2' $15.00 First, remove some to most of the small sucker stems.