California Horticultural Society

2007 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:

Arnold Arboretum (AA),
Alan Brubaker (AB),
Ruth Bancroft Garden (RBG),
Fred Bové (FB),
Betsy Clebsch (BC),
Carol Coate (CC),
Ellen Edelson (EE),
Bobbi Feyerabend (BF),
Ellen Frank (EF),
Jan Hamby (JH),
Christie Hastings (CH),
Ed Holm (EH),
Bob Hornback (BH),
Irene A. Isgur (IAI),
Mary Sue Ittner (MSI),
Ron Lutsko (RL),
Daisy Mah (DM*),
Don Mahoney (DM#),
John Marchant (JM),
Bruce Peters (BP),
Bob Scudder (BS*),
Richard Starkeson (RS),
Barbara Stevens (BS#),
SF Botanical Garden at Strybing Arboretum (SF),
Scott Trees (ST),
Patricia Van Aggelen (PVA),
Kristin Yanker-Hansen (KYH),

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


1. Acantholimon armenum (JM): stratify 6–12 weeks
2. Acer circinatum (EH): Vine Maple; stratify 2–3 months
3. Agapanthus coddii (DM#): large lavender-blue flower
4. Agapanthus inapertus pendula (DM#): flower deep blue
5. Agrostis stolonifera ‘Green Twist’ (JH): completely prostrate pendant form of Creeping Bentgrass; in an elevated container, a wild looking waterfall of verdant foliage; full sun; water retaining soil mix, frequent watering
6. Allium dichlamydeum (DM#): S.F. native; deep purple flower
7. Allium sp (AB): pink-lavender flower; rosette of twisted leaves
8. Allium sp (AB): red-purple flower; clumps to 18"
9. Amaryllis hyb (AB): dwarf form; pink flower
10. Aquilegia ‘Ruby Port’ (DM*)
11. Asclepias fascicularis (RL): coll. by Hwy 89 at Hwy 26, Calif.
12. Asclepias physocarpus (RS): native to South Africa
13. Asclepias tuberosa (ST) ‘Tropical Milkweed’
14. Babiana angustifolia (DM#): large purple flower
15. Barbarea vulgaris variegata (BP): variegated rocket
16. Berlandiera lyrata (RBG)
17. Beschorneria yuccoides (RL)
18. Betula apoiensis (AA): naturally dwarf birch; white bark; native to Korea and Japan
19. Bloomeria humilis (MSI): California native bulb, yellow flowers
20. Bomarea sp (RL)
21. Bomarea sp (RS): large clusters of yellowish flowers
22. Brassica oleracea (FB): ‘Spigiariello’, Italian heirloom kale
23. Brodiaea californica (MSI): tallest Calif. Brodiaea; pink flowers
24. Calibanus hookeri (JM)
25. Calceolaria falklandii (AB)
26. Calochortus luteus (DM#): yellow flower
27. Calochortus superbus (AB)
28. Calycanthus occidentalis (EH): Spice Bush; original parent from banks of Pescadero Creek, San Mateo County
29. Camellia lutchuensis (BS#)
30. Canna hybrid (CH): to 6'; flower clear light yellow
31. Ceiba (=Chorisia) speciosa (EH): lg. tree; beautiful flowers; coll. Redwood City by the northern boundary of Menlo Park
32. Cephalotaxus fortunii (AB): Chinese Plum-Yew; nice sm. conifer
33. Chimonanthus praecox ‘Concolor’ (CH): Wintersweet; large shrub; winter flowers pale yellow
34. Chionanthus retusus (EH): sm. tree; spring flower; seed will germinate in second spring after fall sowing (two phase dormancy)
35. Cichorium intybus (FB): ‘Orchidea Rosa’, Italian red chicory
36. Citrullus vulgaris ‘Moon & Stars’ (DM*): heirloom watermelon; yellow speckles on green fruit
37. Cleistocactus smaragdiflorus (RBG)
38. Clematis hirsutissima (RL): collected at Warm Springs, Idaho
39. Cleome hassieriana ‘Purple Queen’ (ST)
40. Cleome marshallii (DM*): to 20"; flowers delicate cream with spidery tangerine stamens
41. Collomia grandiflora (BC)
42. Cornus capitata (DM*): Evergreen Dogwood; lovely small tree where it isn’t too hot and dry
43. Cornus glabrata (EH): Santa Cruz Mountains; good fall color; stratify 3-4 months
44. Crassula perfoliata v variegata (DM#)
45. Crocosmia masonorum (DM#)
46. Cuphea lanceolata (DM#): annual; large purple flower
47. Dahlia scapigera (DM#): red flower
48. Dahlia hybrid (KYH): taken from a very dark leafed form with wine colored flowers; sun to partial shade
49. Daucus carota (EH): Queen Anne’s Lace
50. Delphinium cardinale (AB)
51. Delphinium requinii (DM*)
52. Dianthus ‘Rainbow Loveliness’ (BF): cute fuzzy/frilly flower white or very pale pink
53. Dierama pendula alba (RL)
54. Digitalis ferruginea (DM*)
55. Digitalis lanata (BC)
56. Digitalis sp (BF): flower yellow-brown
57. Dodecatheon jeffreyi (RL): collected at Crane Flat, Yosemite
58. Doryanthus palmeri (RL): collected at Mare Island
59. Dothonia californica (DM#): California native grass
60. Dyckia sp (AB): spike of yellow flowers
61. Echeveria agavoides (DM#): leaves tipped red
62. Echeveria ciliata (DM#): small succulent
63. Echeveria lilacina hybrid (DM#): thick silver leaves
64. Echinocactus grusonii (RBG)
65. Echinocactus platyacanthus (RBG)
66. Echinopsis formosa hybrid (RBG): yellow flower
67. Echium wildpretii (PVA): Tower of Jewels; biennial, roundish rosette of gorgeous long silver leaves in first year, column to 5' covered with rose red flowers in second year
68. Elymus magellanica (DM#): silver-blue leaves
69. Eriogonum jamesii v flavescens (JM): stratify 6–12 weeks
70. Eriogonum latifolium nudum (EH): collected in Plumas County
71. Eriogonum nebraskense ssp parviflorum (JM): very low growing, with flowers resting on foliage; stratify 6–12 weeks
72. Eriogonum wrightii (DM*): 2' wands of small pinkish white flowers above silvery white mat of leaves
73. Eriogonum wrightii ssp wrightii (JM)
74. Eryngium paniculatum (DM*): white flower
75. Erysimum sp (DM#): from Wayne Roderick; shrub to 2'; pink flower in January
76. Felicia dubia (DM#): annual to 10"; turquoise blue flower
77. Ferocactus pilosus (RBG)
78. Ferocactus rectispinus (RBG)
79. Festuca californica ‘Riverhouse Blues’ (RL)
80. Fibigia clypeata (DM*): gray hairy leaves; attractive seed pods
81. Fritillaria atropurpurea (RL): collected at Henry’s Fork, Idaho
82. Gallardia hybrid (KYH): pure yellow flowers; fairly easy from seed; sun; generally deer proof
83. Garrya eliptica (EH): collected Santa Cruz Mountains; stratify 2–3 months
84. Gladiolus carmineus (MSI): low growing gladiolus blooming in the fall before its leaves, blooms in nature in view of the ocean, good naturalizer in coastal gardens
85. Gladiolus geardii (MSI): beautiful South African bulb; only briefly dormant, probably best with year round water
86. Gossypium ‘Red-Leaved’ (BP): Red-Leaved Cotton
87. Habranthus robustus (EH): Autumn bloomer; start in pot and transplant after three years
88. Helianthus angustifolia (RL)
89. Helianthus annuus ‘Bright Bandolier’ (EF) bouquet sunflower
90. Helianthus nuttallii (RL): collected at Ketchum, Idaho
91. Heracleum lanatum (AB)
92. Hesperantha cucullata (MSI): South African bulb, grown from seed from Wayne Roderick; flowers white with pink on the reverse, opening early afternoon instead of early evening like some H. cucullata forms
93. Hibiscus ferrugineus (KYH): miniature hibiscus from Madagascar; orange coral flowers about 1 inch in diameter; sun; easy to grow from seed as long as you have heat
94. Iberis umbellata ‘Iceberg’ (BP): beautiful cut flower, like a gargantuan 3 foot white Alyssum!
95. Idesia polycarpa (SF)
96. Impatiens balsamina (KYH): showy annual; flowers up and down the stems; partial shade; plant seeds where they are to grow
97. Ipomaea sp (RL): coll. at Los Algodones, Mexico; yellow flower
98. Ipomopsis rubra (AB & RL)
99. Iris hybrid (EE): Pacific Coast Iris, mixed
100. Isomeris arborea: Bladderpod; yellow flower
101. Jatropha gossypifolia (BP): beautiful deep maroon young leaves; likes warmth, tolerates drought once established
102. Kniphofia ‘Orange Sherbet’ (DM#)
103. Lathyrus jepsonii californicus (EH): coll. in Plumas Co.; perennial
104. Lathyrus odoratus ‘Dark Knight’ (BF): Sweet Pea; flower very dark purple/magenta
105. Lavatera assurgentea (RS): California native
106. Lepechinia hastata (DM#)
107. Lepechinia sp (AB): to 6'; purple flower
108. Lessingia filaginifolia (RL): collected at Pleasanton Ridge, Calif.
109. Lilium pitknense (MSI): rare lily; seeds from plant purchased from Calflora
110. Lilium sp (AB): to 7'; flower orange with spots
111. Limonium minutum (CC)
112. Lonicera hispidula (BS*): California native vine
113. Lunaria annua (BC & EH): seed pods attractive in dried arrangements
114. Lupinus polyphyllus (BS#)
115. Lupinus hybrid (AB): mixed
116. Lychnis coronaria (DM#): Rose Campion; white leaves; magenta flower
117. Lycopersicon esculentum (EH): heirloom tomato ‘Amish Paste’; larger than Roma and more meaty with few seeds; indeterminate; open pollinated
118. Lycopersicon esculentum (EH): heirloom tomato ‘Big Rainbow’; red, orange, and yellow coloring; very flavorful, a personal favorite; indeterminate, 85 days, 16–28 ounce fruit; indeterminate; open pollinated
119. 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
120. Lycopersicon esculentum (EH): heirloom tomato ‘Black Pear’; like ‘Yellow Pear’ but stronger flavor; dark color both inside and out; indeterminate; open pollinated
121. Lycopersicon esculentum (EH): heirloom tomato ‘Black Prince’; dark inside and out; medium size; good flavor; indeterminate; open pollinated
122. Lycopersicon esculentum (EH): heirloom tomato ‘Brandywine’; to one pound; tall vines; excellent old fashioned flavor; indeterminate; open pollinated
123. Lycopersicon esculentum (EH): heirloom tomato ‘Copia’; to one pound; similar to ‘Pineapple’; indeterminate; open pollinated
124. Lycopersicon esculentum (EH): heirloom tomato ‘Pineapple’; like ‘Big Rainbow’ but a bit smaller with sweeter flavor; indeterminate; open pollinated
125. Lycopersicon esculentum (EH): heirloom tomato ‘White Beauty’; medium size; sweet; white inside and out; indeterminate; open pollinated
126. Lycopersicon esculentum (EH): heirloom tomato ‘Yellow Brandywine’; smooth yellow skin; to one pound; extremely rich tasting; indeterminate; open pollinated
127. Lycopersicon esculentum (EH): heirloom tomato ‘Yellow Pear’, low acid; indeterminate; open pollinated
128. Lysimachia atropurpurea (DM*)
129. Manihot grahamii (BP): tapioca relative to 25', quickly creates beautiful lace ceiling effect from deeply cut round leaves
130. Metasequoia glyptostroboides (EH): very low germination rate
131. Mimulus guttatus (DM#): miniature to 3"; yellow flower
132. Mirabilis jalapa ‘Broken Colors’ (BP): Four O’Clock; variegated flowers pink with yellow, yellow with magenta; white with yellow and pink
133. Mirabilis longiflora (KYH): species Four O’Clock; long fragrant white flowers; will resprout from the roots in mild winters; deer often don’t eat these plants
134. Moraea vegeta (DM#)
135. Neobuxbaumia polylopha (RBG)
136. Nicandra physaloides (EH): Shoo-Fly Plant; dried seed pods attractive
137. Nicotiana knightiana: annual to 5'
138. Nothofagus solandri v solandri (DM#)
139. Omphalodes linifolia (DM*): Venus’s Navelwort; annual; gray leaves; tiny airy white flowers
140. Orlaya grandiflora (BC & DM*)
141. Ornithogalum conicum ssp conicum (DM#)
142. Orthosanthus sp (AB): blue flower
143. Papaver rupifragum
144. Papaver somniferum (BC): single
145. Papaver somniferum (CC): double; pink flower
146. Papaver somniferum (CC): single; lavender flower
147. Papaver somniferum ‘Lauren’s Grape’ (DM*): flower plum colored
148. Parnassia palustris (RL): collected at Homer, Alaska
149. Parodia (= Notocactus) leninghausii (RBG)
150. Patersonia occidentalis (BH): irid; flower deep purple; resists drought and deer
151. Pavonia missionum (KYH): purchased this plant at the Huntington Botanical garden; flowers are about 1" across, fire engine red with yellow center; from Argentina, may be very tender; readily reseeds at the Huntington every year, begins to bloom while very small, and grows significantly in a season making a wonderful splash of fall color
152. Penstemon campanulata (DM#)
153. Penstemon sp (AB): to 6'; purple flower
154. Perilla frutescens (BC)
155. Petroselinum sativum (FB): Italian flat-leaved parsley
156. Pinus jeffreyi (EH): coll. at 3000' in Plumas Co.; stratify 3 mo.
157. Polygonum oriental (KYH): Kiss Me over the Garden Gate; wonderful tall annual which will be your friend for life
158. Polyxena longituba (MSI): low growing South African fall blooming bulb; white flowers; good in container
159. Potentilla sp (RL): collected at Little Mt Hoffman, California
160. Prunella vulgaris v angustifolia (DM#): Calif. native; purple flower
161. Ptilostemon afer (DM*): Ivory Thistle; native to North Africa; pale lilac flowers; variegated spiny leaves
162. Puya raimondii (SF): one of world’s largest bromeliads, to 10' across, bloom stalk to 30'; very rare, native to Chile, seed rarely available (seed for this parent from Victor Reiter); takes 30–50 years to bloom
163. Rauvolfia javanica 2 (BP): fast growing and lush looking medium size tree; prefers warmth, not hardy
164. Rhodochiton atrosanguineum: Purple Bell Vine
165. Rhododendron macrophyllum (IAI): collected on the Oregon coast
166. Ribes sanguineum ‘Variegata’ (BP): lightly variegated, most obviously on younger leaves; unknown if true from seed
167. Ricinus communis (CH & PVA)
168. Romulea bulbocodium (MSI): Mediterranean corm; easy to grow and increases well; very pretty, good in container
169. Rosa woodsii (EH): coll. Plumas County; stratify 2–3 months
170. Salvia algeriensis (BC)
171. Salvia apiana (BC)
172. Salvia chamaedryoides (DM#): flower sky blue
173. Salvia karwinskii (RS)
174. Salvia mellifera (DM#): California native
175. Salvia mexicana (DM#): flower deep blue with dark calyx
176. Scutellaria baicalensis (AB)
177. Senna artemisoides (RBG)
178. Senna multiglandulosa (= Cassia tomentosa) (BS#)
179. Smyrnium olusatrum 2 (BP & FB): Alexander’s Black Lovage; looks like angelica; completely edible, often blanched first; doesn’t like maritime exposure
180. Solidago californica (BF): to 3'; gold flower, late summer
181. Sorbus californicus (EH): coll. at 4000' in Plumas Co.; stratify 3 mo.
182. Sparaxis (= Synodea) variegata (DM#)
183. Spheralcea ambigua (RL)
184. Stachys nivea (BF)
185. Stanleya sp (AB)
186. Tabebuia chrysotricha (RBG)
187. Tecoma stans (RBG)
188. Tigridia pavonia (DM#): mixed
189. Trachelium cv (BF): purple foliage and flower
190. Triteleia ixioides (MSI): late blooming form, bright yellow
191. Tritelia laxa (DM#): flower blue/purple
192. Tweedia caerulea (DM*): to 2'; blue flower, late summer, followed by milkweed pods
193. Vaccinium vitis-idaea (RL): coll. Russian River, Kenai-Bo, Alaska
194. Viburnum acerifolium (EH): good fall color
195. Watsonia coccinea (DM#): orange flower
196. Xanthisma texensis (=texanum) (DM*): 2-3'; yellow 1" daisies, summer
197. Zigadenus sp (RL): collected at Mt Constitution, California
198. mystery aroid (BF)
199. mystery composite (RL): to 4"; extremely floriferous, 1" flowers pink/white; Townsendia? Aster? Erigeron?
200. mystery grass (RL): collected south of Miraflores, Mexico; white and pink flower
201. mystery seed (DM*): “Earl Grey”
202. mystery seed (FB): Calonyction?