California Horticultural Society

2006 Seed Exchange

The Cal Hort Seed Exchange is open to members only. If you're not a member, please click on the "Membership" link to your left to find out how to become one!

The seed order form is included in the January Bulletin and needs to be returned by the end of February.

All seeds are fully distributed in March.

Thanks to those who donated seed for the exchange this year, without whose participation this program would not be possible, and whose initials in the list below indicate their expressed willingness to be contacted about the plants from which the donated seed came and the conditions under which they grow:

(AA) Arnold Arboretum ,
(AB*) Alice Bachelder
(AB#) Alan Brubaker
(AM) Ann Miani
(BC*) Betsy Clebsch
(BC#) Barrie Coate
(BH) Barbara Hopper
(BF) Bobbi Feyerabend
(BR) Bonnie Remegio
(BW) Bob Watts
(CH) Christie Hastings
(CR) Corina Rieder
(DG) Don Gerimonte
(DH) Dave Hermeyer
(DM*) Daisy Mah
(DM#) Don Mahoney
(DN) David Norton
(EH) Ed Holm
(GG) Gamble Garden
(JS) Jill Salmon
(KE) Kathy Echols
(KH) Kyle Herbold
(KT) Kathy Till
(KYH) Kristin Yanker-Hansen
(LB) Linda Baptiste
(LW) Liz Waterman
(NW) Nancy Wilson
(PVA) Patricia Van Aggelen
(QBG) Quarryhill Botanical Garden
(RBG)Ruth Bancroft Garden
(RS) Richard Starkeson
(RW) Richard Wagner
(SB) Sondra Bierre
(SF) SF Botanical Garden at Strybing Arboretum
(UCD) UC Davis Arboretum

and those whose gratefully received donations remain anonymous. Nomenclature and descriptions are those given by these donors.



1.  Acacia baileyana 'Purpurea' (RW)
2.  Acer circinatum (EH): Vine Maple; stratify 2-3 months
3.  Acer davidii (QBG)
4.  Acer fulvescens ssp pentalobum (QBG)
5.  Acer macrophyllum (AB*): Big Leaf Maple, collected wild from San Anselmo hills, Marin County
6.  Acer morrisonense (BC#)
7.  Acer palmatum 'Atrolineare' (EH): stratify 2-3 months
8.  Acer saccharum v grandidentatum (UCD): Bigtooth Maple; native to southwest U.S.; small drought-tolerant tree; red and yellow fall color9.  Acer truncatum (LB): Chinese maple
10.  Adiantum aleuticum (PVA): Five Finger Fern
11.  Aeschynanthus radicans hyb (AB*): epiphytic gesneriad houseplant, bright shade or sun; plenty of water, fertilizer; free-draining soil; trailing dark green stems; bright red tubular flowers
12.  Agropyron magellanica (DM#)
13.  Agrostemma githago 'Milas' (PVA): corncockle; to 30"; sun
14.  Ailanthus altissima (RW)
15.  Albizia julibrissin (AA)
16.  Alcea rugosa (UCD): Hollyhock; flower pale yellow
17.  Allium dichlamydeum (DM#)
18.  Allium senescens (GG)
19.  Allium sp (AB#): lavender flower; rosette of twisted leaves
20.  Allium sp (AB#): pink-lavender flower; clumps to 18"
21.  Alphitonia excelsa (BC#)
22.  Amaryllis 'Red' (DM#): profuse bloom; thrives outdoors; originally from Suncrest
23.  Amaryllis hyb (AB#): dwarf form; pink flower
24.  Anagallis monellii (DM#)
25.  Angelica archangelica (GG)
26.  Aquilegia longissima (NW): to 3'; yellow flower
27.  Aquilegia sp (DN): to 30"; compact flowers, short white sepals, mauve petals, short spurs
28.  Aquilegia hyb: short-spurred flowers purple and white
29.  Asarum sp (AB#): beautiful mottled leaves with white veins
30.  Asclepias curassavica (LW)
31.  Asclepias fruticosa or physocarpa (=Gomphocarpus fruticosus or physocarpus) (BR): swan plant or goose plant; flowers not showy but inflated seed pods striking; good drainage, regular water
32.  Asphodeline liburnica
33.  Aster divaricata (BF): sub-shrub; blooms late summer with a cascade of white stars; tolerates shade
34.  Astrantia major (AB#): white flower; shade
35.  Astrantia 'Hadspen Blood' (PVA): flower dark red
36.  Atriplex hortensis (BC*)
37.  Babiana stricta v erectifolia (DM#)
38.  Babiana sp (BR)
39.  Belamcanda chinensis (QBG)
40.  Beschornaria hyb (KE): dense bloom on red spikes to 4'
41.  Bouteloua curtipendula (CR)
42.  Bouteloua gracilis (CR)
43.  Brachychiton popluneus (KYH): evergreen looks like a poplar, but is a mallow; first year my tree flowered, at probably 25 feet tall
44.  Callicarpa sp (QBG): probably C. japonica, but undetermined as of yet
45.  Calocedrus decurrens (EH): collected Plumas County; stratify 2-3 months
46.  Calochortus luteus (DM#)
47.  Calycanthus occidentalis (EH): Spice Bush; original parent from banks of Pescadero Creek, San Mateo County
48.  Canna hyb (CH): flowers lemon yellow, well-behaved plant to 5'
49.  Carex tumulicola (LB): Berkeley sedge
50.  Catalpa speciosa (RW)
51.  Celtis occidentalis (EH): Hackberry; good street tree; stratify 2-3 months
52.  Cephalotaxus fortunii (AB#): Chinese Plum-Yew; nice small conifer
53.  Cercis occidentalis (AB*): Redbud, collected wild from eastern Napa County; summer-dry deciduous shrub to 10'; sun to part shade; magenta flowers in early spring
54.  Cerinthe major (PVA)
55.  Chimonanthus praecox 'Concolor' (CH): wintersweet; pale yellow flower from December till May
56.  Chionanthus retusa (AA)
57.  Chirita tamiana (SF): grow in cool greenhouse
58.  Chorisia speciosa (EH): Silk Floss Tree
59.  Chusquea sulcata (SF)
60.  Clarkia rubicunda (DM#): very tall form from Miller Knox Park, Richmond CA
61.  Clarkia unguiculata 'Choice Double Mixed' (BF): frilly pink flowers
62.  Clematis montana (DG)
63.  Clematis sp (KYH): California native, not sure but probably C. ligusticifolia; blooms spring through summer; very showy seed heads; will reseed, although not too aggressively
64.  Cleome marshallii (DM*)
65.  Commelina tuberose (BF): herbaceous; blue flower
66.  Coreopsis gigantea (CH): perennial native to Channel Islands and Baja California; good specimen plant to 6' where winters are mild, does very well in Sunset zone 14; thick succulent trunk; feathery foliage; yellow flowers in spring
67.  Cuphea lanceolata
68.  Cyathea medullaris (SF): Black Tree Fern; use specialized spore technique to germinate
69.  Cycas revoluta (AM): Sago Palm
70.  Cypella coelestis (GG, DM#)
71.  Cyrtanthus brachycyphus (SF)
72.  Dahlia coccinea 'Deep Purple' (DM#): hybrid plant from Ginny Hunt
73.  Dahlia imperialis hyb (DM#): large pink flower over extended bloom period, both early and late
74.  Dahlia scapijera (DM#): flower deep red
75.  Datura stramonium (KT): Jimson weed; poisonous
76.  Datura tatula (KYH): plant from Annie's Annuals; can reseed prolifically; untouched by deer or turkeys
77.  Daucus carota (EH): Queen Anne's Lace
78.  Delphinium luteum (NW): to 8"; yellow flower; good pot plant; collected in Humboldt County
79.  Delphinium requinii (DM*)
80.  Delphinium 'Dreaming Spires'
81.  Dierama pulcherrima (GG, DM*)
82.  Dierama pulcherrima (JS): white flower
83.  Dierama robusta 'White' (DM#)
84.  Dipogon lignonus (DH)
85.  Dischidia pectinoides (BW): small epiphytic vine; small red flower; inflated leaves; indoor plant for bright shade; let dry between waterings
86.  Dudleya brittonii (DM#)
87.  Dudleya farinosa (DM#): very white
88.  Dyckia sp (AB#): wonderful spikes of orange flowers; tolerates drought
89.  Eccremocarpus scaber: flowers pale yellow
90.  Echinocactus grusonii (RBG):Golden barrel cactus. Forms large spherical bodies up to 3 ft. in diameter. Usually offsets in time to form a clump. Stout yellow spines on a green body. Yellow flowers produced sporadically over the summer. Hardy to at least 20° °F.
91.  Echinocactus platyacanthus (RBG): A large Mexican barrel cactus, similar in its cultural requirements to the golden barrel. It eventually gets taller (up to 6 ft.), but this takes many decades as it is very slow-growing. The body on mature plants is much more visible than the golden barrel because the spines are shorter. Seedlings are blue, but plants eventually become green. Yellow flowers.
92.  Echinocereus conglomeratus (RBG): Now considered a synonym of E. stramineus, this hedgehog cactus forms small clumps of globular bodies covered with white spines. From the US southwest and N. Mexico. Beautiful magenta flowers.
93.  Echinopsis tarijensis (RBG): A short-columnar densely-spined cactus from the lower Andes in the Argentina-Bolivia border region. May attain a height of over 10 ft., but only after decades of growth.  Spine color ranges from grayish-white to honey-colored.  Flowers may be red or cream. Very cold-hardy.
94.  Echinopsis thelegona (RBG): An Argentine cactus with multiple stems 3" in diameter that creep along the ground, eventually attaining a length of 6 ft. or more. Not densely spined. Large white flowers. Hardy to at least the upper 20's F.
95.  Echium candicans (AM)
96.  Echium wildpretii (UCD): Tower of Jewels; dramatic biennial native to Canary Islands; spike of coral flowers to 6' in its second year
97.  Elymus magellanica (DM#): silver leaves
98.  Entelea arborescens (SF)
99.  Eriogonum crocatum (PVA)
100.  Eriogonum latifolium (PVA): Coast Buckwheat
101.  Erythrina crista-galli (UCD): Cockspur Coral Tree; medium tree; large clusters of blood red pea flowers; small stems freeze back in zone 14 so pruning is required to maintain tidy appearance
102.  Eschscholzia californica (AB*): California Poppy
103.  Eucomis bicolor (GG)
104.  Euonymus hamiltonianus (QBG)
105.  Eupatorium maculatum (DN): Joe Pye Weed, collected wild on grounds of Hampshire College, Amherst MA; to 6'; purple head of blooms late summer
106.  Euphorbia corraloides (GG)
107.  Euphorbia lambii (GG)
108.  Euphorbia mellifera (GG)
109.  Felicia dubia (DM#): dwarf annual; flower bright blue
110.  Felicia heterophylla (DM#)
111.  Ferocactus histrix (RBG): A Mexican barrel cactus, similar in appearance to the golden barrel, but stays single and has spines pale yellow rather than golden yellow. Pale yellow flowers in spring. Hardy to circa 20° F.
112.  Ferocactus peninsulae v viscainensis (RBG): A barrel cactus from Baja California with stout hooked red spines and red flowers.  Our plant at RBG has formed a group of several stems and is 3 ft. tall. Hardy to the mid-20's F.
113.  Ferocactus pilosus (RBG): A red-spined barrel cactus from northern Mexico, eventually growing quite tall (6-10 ft.), but very slow. Thread-like radial spines contrast nicely with the stout red central spines. Orange-red flowers in spring. Hardy to low 20's F.
114.  Ferocactus pottsii (RBG): A chubby globular barrel cactus (normally single) from northern Mexico; spines not dense so that the gray-green body is easily visible. Yellow flowers in summer, followed by long-lasting attractive yellow fruits. Hardy to at least the upper 20's F.
115.  Ferula glauca (GG)
116.  Firmiana simplex (QBG)
117.  Freesia (= Anomatheca, = Lapeirousia) laxa (GG, EH, BR): seed in place; requires only winter rain
118.  Freesia (= Anomatheca, = Lapeirousia) laxa: white flower
119.  Freesia (= Anomatheca, = Lapeirousia) laxa (NW): flower white with red eye
120.  Fuchsia excorticata (SF): red leaves
121.  Gilia capitata (DM#): California native annual
122.  Gilia tricolor: Bird's Eye Gilia
123.  Grindelia hirsutula (DM#): Gumplant; California native
124.  Gypsophila elegans
125.  Habranthus robustus (EH): Autumn bloomer; start in pot and transplant after three years
126.  Helenium bigelovii (AB#)
127.  Heracleum lanatum (AB#)
128.  Hesperaloe gigantea (KE)
129.  Hesperaloe parviflora (AB#, GG, RW)
130.  Hesperantha (= Schizostylis) coccinea: red flower
131.  Hibiscus biseptus (KYH): native to the California and Arizona deserts; interesting because of its irritating hairs, kind of a desert nettle; flowers yellow and quite showy; needs to be kept dry during the winter months; cold is not a problem; grows well in a pot
132.  Hibiscus coccineus (KYH): perennial from Texas, flower red with petals that do not touch; sow as early as January, should bloom in the first year; needs a warm climate and regular water
133.  Hibiscus trionum (KYH): probably a short term tropical in mild areas, a reseeding annual in areas of frost; lovely flower yellow with dark, near black, throat
134.  Hippeastrum elwesii (RW)
135.  Hippeastrum mandroni (BW)
136.  Hunnemannia fumarifolia (GG)
137.  Idesia polycarpa (QBG)
138.  Impatiens balsamina (KYH): annual; flowers, along stems of plant, from purple, lavender, red, pink, and white
139.  Impatiens glandulifera (DM#): summer annual to 4'; flower deep pink
140.  Ipomoea purpurea 'Grandpa Ott's' (DN)
141.  Ipomopsis rubra (AB#)
142.  Ixia monadelpha (DM#): mixed forms, flower white to blue
143.  Ixia viridiflora (KH, JS): turquoise flower; reseeds but not aggressively
144.  Juncus patens 'Occidental Blue' (PVA): beautiful feathery seed heads
145.  Kennedia coccinea (BH)
146.  Koelreuteria paniculata (QBG)
147.  Lathyrus jepsonii californicus (EH): collected in Plumas County; perennial
148.  Lathyrus odoratus (BR): sweet pea; pink flower
149.  Lavatera arborea variegata (= maritima bicolor) flower (CR): tree mallow; biennial to 12'; leaves green and white
150.  Lavatera assurgentifolia (RS)
151.  Lavatera trimestris 'Mont Blanc' (BC*)
152.  Leonotis ocymifolia (UCD): Lion's Tail; drought-tolerant shrub to 4' or more with typical whorls of orange flowers and small round leaves; nomenclature note: it looks like L. ocymifolia is the new name for L. leonurus, and this is definitely different from the well-known strap-shaped leaf form
153.  Lilium rubescens (NW): to 6'; collected in Humboldt County
154.  Limnanthes douglasii (DM#): Meadow Foam; California native annual
155.  Limonium minutum (DM*)
156.  Linanthus grandiflorus (DM*): California native annual
157.  Littonia modesta: vine appears yearly mid to late Spring; climbs by tendrils at the tips of leaves, which are in whorls of four; one-inch orange campanulate flowers; withers and disappears for the season after seed is ripe; withstands repeated winter water while dormant
158.  Lunaria annua (EH): seed pods attractive in dried arrangements
159.  Lunaria annua v albiflora 'Alba Variegata' (DM*)
160.  Lupinus hyb (AB#): pink-rose flower
161.  Lycopersicon esculentum (EH): heirloom tomato 'Amish Paste'; larger than Roma and more meaty with few seeds; indeterminate; open pollinated
162.  Lycopersicon esculentum (EH): heirloom tomato 'Anna Russian'; large, nearly one pound; early oxheart; excellent flavor
163.  Lycopersicon esculentum (EH): heirloom tomato 'Big Rainbow'; red, orange, and yellow coloring; very flavorful, a personal favorite; indeterminate, 85 days, 16–28 oz fruit
164.  Lycopersicon esculentum (EH): heirloom tomato 'Black Krim'; another favorite; reddish-brown when ripe, red inside; outstanding flavor; tends to crack if not enough regular water; indeterminate; open pollinated
165.  Lycopersicon esculentum (EH): heirloom tomato 'Black Plum'; cherry tomato size; excellent flavor; eat like grapes or add color to a salad
166.  Lycopersicon esculentum (EH): heirloom tomato 'Black Prince'; another purple one
167.  Lycopersicon esculentum (EH): heirloom tomato 'Brandywine'; to 1-1/2 pounds; tall vines; excellent rich flavor
168.  Lycopersicon esculentum (EH): heirloom tomato 'Cherokee Purple', similar to 'Black Krim' but sweeter and less likely to crack; indeterminate; open pollinated
169.  Lycopersicon esculentum (EH): heirloom tomato 'Costoluto Fiorentino'; not so ugly as 'Costoluto Genovese'; makes a perfect five-minute sauce
170.  Lycopersicon esculentum (EH): heirloom tomato 'Costoluto Genovese'; large, totally ugly, meaty red paste tomato with excellent flavor; indeterminate; open pollinated
171.  Lycopersicon esculentum (EH): heirloom tomato 'Great White'; large, totally white outside, sweet flavor; indeterminate; open pollinated
172.  Lycopersicon esculentum (EH): heirloom tomato 'Green Zebra'; green with stripes, good flavor, sweeter than most, great for salad; indeterminate; open pollinated
173.  Lycopersicon esculentum (EH): heirloom tomato 'Limmony (Big Yellow)'; beefsteak type; slight lemon flavor
174.  Lycopersicon esculentum (EH): heirloom tomato 'Pineapple'; like 'Big Rainbow' but a bit smaller with milder flavor; indeterminate; open pollinated
175.  Lycopersicon esculentum (EH): heirloom tomato 'Pink Brandywine'; same as ÒBrandywine' but inside more pink in color
176.  Lycopersicon esculentum (EH): heirloom tomato 'Purple Calabash'; most purple of all; almost as ugly as 'Costoluto Genovese'; rich winey flavor
177.  Lycopersicon esculentum (EH, RS): heirloom tomato 'Yellow Pear', low acid; indeterminate; open pollinated
178.  Machaeranthera tanacetifolia: Blue Tahoka Daisy
179.  Madia elegans (DM#): California native annual
180.  Magnolia grandiflora (LB): small tree to 20'; dense flowers platter-sized
181.  Nemophila maculata: Five Spot
182.  Nemophila menziesii: Baby Blue-Eyes
183.  Nepeta tuberosa (UCD): Tuberous Catmint; thick furry leaves; dense fuzzy purple flower spikes; needs good drainage
184.  Nicandra physaloides (EH): Shoo-Fly Plant; dried seed pods attractive
185.  Nicotiana sylvestris (KYH, UCD): Flowering Tobacco: short-lived tender perennial to 5' tall; long tubular evening-scented white flowers; in zone 14, best in part shade; will reseed
186.  Nigella damascena
187.  Nigella 'Shorty'
188.  Oreocereus (= Morawetzia) doelzianus (RBG): A clumping Peruvian cactus with slender stems covered with white wool, forming a sprawling clump up to 3 ft. tall. Magenta flowers in late summer or fall. Hardy to at least the upper 20's F.
189.  Orlaya grandiflora (DM*)
190.  Orlaya grandiflora 'White Lace' (PVA): to 20"; white flower; sun to part shade
191.  Orthosanthus sp (AB#): blue flower
192.  Pandorea pandorana (RBG): Wonga-wonga vine, an Australian plant with jasmine-like foliage. Flowers in early spring. Though varying colors are listed for the species, our plant at RBG has cream-white flowers.; Hardy to at least the mid-20's F.
193.  Papaver californica
194.  Papaver rhoeas
195.  Papaver somniferum
196.  Papaver somniferum (BC#): flower pink, double
197.  Papaver somniferum (BC#): flower pink, single
198.  Penstemon campanuloides (DM#)
199.  Penstemon mexicanus (= Allophyton mexicanum, = Tetranema mexicanum) (AB#)
200.  Penstemon hyb: good blue
201.  Phaecelia tanacetifolia
202.  Phygelius 'African Queen' (LW): Cape fuchsia; showy perennial to 3', spreading vigorously; summer into fall, tall stems carry hanging tubular flowers orange-red with yellow throat, attractive to hummingbirds; prune to keep neat in season, cut to ground in winter; full sun to light shade
203.  Pinus jeffreyi (EH): collected Plumas County; stratify 3 months
204.  Pinus torreyana (SF)
205.  Plectranthus dolicochampas (SF): flower deep blue
206.  Potentilla sp (DM#): from China; white-silver leaves; tolerates drought
207.  Psoralea pinnata
208.  Pterostyrax hispida (QBG)
209.  Rhodochiton volubile
210.  Rhus coppalina (BC#)
211.  Ricinus communis (KE): Castor Bean; to 8'; dark reddish purple leaves; good red flowers Ð WARNING: poisonous
212.  Romneya coulteri (DM*): Matilija Poppy
213.  Rosa woodsii (EH): collected Plumas County; stratify 2-3 months
214.  Rucola sativa: Arugula
215.  Rudebeckia hirta (KYH): flower very deep rust orange double with red center, very showy in the garden; may have been cross-pollinated
216.  Rudebeckia hirta (KYH): flower golden double with red markings, very showy
217.  Salvia apiana
218.  Salvia barrelieri (BC*)
219.  Salvia canariensis (SB): shrub to 8'; flower and calyx both pink; pale green sagittate leaves; white woolly rachis and stems
220.  Salvia clevelandii (SB): California Sage; evergreen shrub to 4'; fast growth; garden cultivar of coastal scrub sage; sun to partial sun; dry to semi-dry; tolerates seaside conditions; tolerates both sand and clay
221.  Salvia columbariae
222.  Salvia iodontha (DM#)
223.  Salvia karwinskii (RS)
224.  Salvia mexicana (PVA): flower bright blue with chartreuse calyx
225.  Salvia patens 'Lavender Lady' (PVA)
226.  Salvia sclarea (SB): Clary Sage; biennial but may live longer; flower white with lilac marking
227.  Salvia 'Sangria' (KE): annual sage to 18"; dark green leaves; large spikes of white bracts with red flowers; blooms all summer; sun to part shade
228.  Sarcococca ruscifolia (EH): intensely fragrant small white flowers in January and February; red fruit; will grow in shade
229.  Scutellaria ventenatii (CR)
230.  Sesbania tripetii (BR): Red Wisteria Tree; orange flowers all summer; sun; little water
231.  Sideritis cypria (BC*, DM*, UCD): Cyprus Woundwort; like a shrubby lamb's ears, grows to 2' x 2' with spikes of unusual green and chartreuse flowers; needs good drainage
232.  Silene lacinata (CR): orange flower
233.  Silene lacinata ssp major (CR): red flower
234.  Sinningia nivalis (DM#): hardy, winter deciduous
235.  Sisyrinchium californicum (CR)
236.  Solandra maxima (SF)
237.  Sophora secundiflora (UCD): Texas Mountain Laurel; slow growing evergreen shrub or small tree; clusters of fragrant purple wisteria-like flowers; bright red seeds are toxic
238.  Sorbus californicus (EH): collected Plumas County; stratify 3 months
239.  Spartium junceum (RW)
240.  Spharalcea incanum (KYH): desert mallow; flower orange, numerous from spring to late autumn; does well in a regularly watered garden, a good horticultural candidate
241.  Stewartia pteropetiolata v koreana (QBG)
242.  Stipa lepida (DM#): California native
243.  Tabebuia chrysotricha (RBG): A South American small tree in the trumpet-vine family, with golden-yellow flowers in early spring.
244.  Talinum paniculatum (AB*): Jewels of Opar; winter dormant perennial to 2'; part sun; keep moist; small pink flowers followed by shiny maroon seed capsules
245.  Tritelia laxa (DM#): early form blooming six weeks before T. 'Queen Fab'
246.  Tritelia 'Queen Fab' (DM#)
247.  Tropaeolum peregrinum: Canary Bird Vine
248.  Tulipa clusiana (NW): flowers red with white
249.  Tweedia caerulea (AB#)
250.  Ungnadia speciosa (UCD): Texas Buckeye; deciduous shrub; pink flowers that emerge before leaves; large three-lobed pods hold shiny black marble-like seeds
251.  Vancouveria hexandra (SF)
252.  Vaquelinia californica (BC#)
253.  Verbascum rorippifolium (DM*)
254.  Watsonia borbonica (DM#): white flower
255.  Watsonia marginata (DM#): pink flower
256.  Yucca whipplei (RW)
257.  Zea perennis (DM#): evergreen; blooms in November
258.  mystery seed: herb; dried leaf appears to have been light green, ovate, dentate margin, 1" wide x 3" long
259.  mystery seed: rumex
260. mystery seed: umbel; plant to 6'