(1) http://www.erowid.org/psychoactives/cultivation/cultivation_growing-the-hallucinogens.shtml#HAWAIIANWOODROSE
HAWAIIAN WOODROSE
Merremia tuberosa;
Morning Glory family (Convolvulaceae)
A slender perennial vine with leaves divided into five to seven narrow lobes. The flowers are yellow, followed by a smooth round capsule, surrounded by five petal-like sepals. Native to Asia; naturalized and cultivated in Hawaii.
Cultivation and Propagation: The large woodrose may be grown outdoors in southern California and the South. The seed of the large woodrose must be nicked well before it will grow. Cut a nick in the seedcoat with a hacksaw, or cut the small end of the seed off. Soak for 24 hours or until it swells. Then place the seed in a bowl or cup of damp peat moss, cover it with plastic wrap, and put it over the pilot light of your stove, or anywhere that maintains a temperature of 80 degrees Fahrenheit or more. Ordinary bottom heat usually isn't warm enough. Check every few days until it sprouts in 3 to 10 days. Once sprouted, plant in a 3- to 4 inch pot if grown indoors, or start seed in May if to be grown outdoors. Place the pot in a large sunny window and give the vine something to twine around. I have seen these vines grow 1 foot or more per week. It is very easy to grow after sprouting. It can take little or much watering and much abuse. The vine will flower the second and subsequent years.
Harvesting: The pods may be harvested when they are thoroughly dry. Its storage properties are the same as those of the baby woodrose.
(2) http://www.hear.org/pier/species/merremia_tuberosa.htm
Common name(s):
English: wood rose, Spanish arborvine, yellow morning-glory
French: liane à tonelle, liane-jaune
Other: alarrak (Saipan); pilikai (Hawai'i)
Description: "Glabrous climber with tuberous roots; leaves 6-20 cm long and wider than long, usually palmately 7-parted, 2 basal lobes smallest, laterals larger, central lobe longest and obovate-acuminate; petiole about as long as blade; peduncles few flowered, as long or longer than petiole; calyx-lobes broad, rounded, obovate, in flower 2-3 cm long, enlarging as fruit matures to 5-7 cm long; corolla about 4-5 cm long, 5-6 cm wide across the limb, bright-yellow; ovary glabrous; capsule 2 cm long, 3 cm wide approximately, pale brown, thin-walled, enclosed in calyx; seeds 1.5 cm long, ovoid, dull black, pubescent on angles." (Stone, 1970)
Habitat/ecology: This light-loving, perennial vine can smother tall forest canopies. It grows in open mesic forests from sea level to 1,400 m. Often cultivated for its ornamental flowers and fruits (C.W. Smith, 1985). In Fiji, "infrequently becoming naturalized near sea level" (Smith, 1991). In Hawai'i, "commonly cultivated and sparingly naturalized in disturbed sites, 25-560m" (Wagner et al., 1999).
Propagation: Mostly distributed by humans from discarded cuttings and floral arrangements containing seeds. Seeds remain viable for years.
(3) http://davesgarden.com/pdb/go/53475/index.html
Synonym:Ipomoea tuberosa
Synonym:Operculina tuberosa
Synonym:Ipomoea mendesii
Synonym:Batatas tuberosa
Height:
30-40 ft. (9-12 m)
over 40 ft. (12 m)
Hardiness:
USDA Zone 9b: to -3.8° C (25° F)
USDA Zone 10a: to -1.1°C (30° F)
USDA Zone 10b: to 1.7° C (35° F)
USDA Zone 11: above 4.5° C (40° F)
Sun Exposure:
Full Sun
Sun to Partial Shade
Light Shade
Foliage:
Blue-Green
Propagation Methods:
From seed; sow indoors before last frost
Scarify seed before sowing
Seed Collecting:
Allow pods to dry on plant; break open to collect
seeds
(4) http://www.edirectory.co.uk/chilternseeds/pages/moreinfo.asp?Table=Product&RecordID=BFBBBIF
The plant, which is a vine, is itself attractive with bright, glossy green, palmate leaves, and, after an initial period of inertia, is fast growing, rampant even.
Possibly hardy in the mildest parts of the country, we would recommend it for a cool greenhouse or, suitably trained, as a pot plant for conservatory or house. Cautiously file the seeds, which are the size of marbles, soak them for 24 hours and then sow individually in pots with 1/3 to 1/4 of the seed exposed above compost level.
(5) http://www.banana-tree.com/Product_Detail~category~12~Product_ID~527.cfm
May be grown indoors if sufficient bright light and warmth are provided.
Seeds are nearly marble size and covered with a velvety black pubescence.
(7) http://www.exotic-gardening.co.uk/Shop/Ipomoea/ipomoea.htm
Easy to germinate. Protect from slugs and snails.
