Written by Maggie
Jan 19 2021
Sorrowless Tree ( Saraca asoca) flowers are golden, very beautiful and elegant, and are very suitable for ornamental flowers.
Sorrowless Tree is an arbor flower, 5-20 meters high; The diameter at breast is 25 cm.
Sorrowless Tree leaves have 5-6 pairs of leaflets, tender leaves slightly purplish red, drooping; Leaflets are subleathery, oblong, ovate-lanceolate or oblong-obovate, 15-35 cm long, 5-12 cm wide, base 1 pair often smaller, apex acuminate, acute or obtuse, base cuneate, lateral veins 8-11 pairs; Petioles are 7 -- 12 mm long.
Inflorescences of sorrowless tree are axillary, large, rachis hairy or subglabrous; Involucral bracts are large, broadly ovate, hairy, caducous; Bracts are ovate, lanceolate, or oblong, 1.5 -- 5 cm long, 6 -- 20 mm wide.1 slice of lower part is largest, gradually decreasing upward, hairy or glabrous, caducous or late; Bracteoles are homomorphic to bracts but much smaller than bracts; Flowers are yellow, posterior parts (base of calyx lobes and disk, stamen, style) reddish, bisexual or unisexual; Pedicels are shorter than calyx tube, articulate; Calyx tube is 1.5-3 cm long, lobes oblong, 4, sometimes 5-6, ciliate; Stamens are 8-10, of which 1-2 are often reduced to subulate, filaments protruding, anthers oblong, 3-4 mm long; Ovary is slightly curved, glabrous or hairy along two sutures and stalks.
The pods of sorrowless Tree are brown and flat, 22-30 cm long and 5-7 cm wide, and the petals are curled; Sorrowless Tree has 5-9 seeds, variously shaped, flat, with a shallow central groove on both sides.
The flowering period of Sorrowless Trees is from April to May. Fruiting period: July to October.
Sorrowless Tree is native to India, Indo-China Peninsula and Yunnan and Guangxi provinces of China.
Sorrowless Tree is also found in Vietnam and Laos.
Sorrowless Tree like warm, high-temperature heat, can not resistant to cold, avoid frost, under 13 ℃, stunted growth, 5 ℃ or so with chilling injury, suitable for cultivation in China area for south China southern, south of the tropic of cancer, seedling shade-tolerance. Sorrowless Tree likes light, like moist, rich soil deep acidic to alkaline soil, natural distribution of limestone mountains, lead to the acidic soil, can grow well, poor soil arid growth, heavy soil, or water should not be planted.
Urban artificial cultivation, it is advisable to layer lime in the preparation of the land. In order to neutralize the soil, and put the decomposed barnyard manure or sieve garbage as the base fertilizer. After the trunk formed, pay attention to pruning and shaping, appropriate control of high growth, and cultivate a broad crown of beautiful trees.
Seedling with seeds, pod mature in August, pick the next place ventilated dry. Seed particles is bigger, kernels per 6850 grams, the seeds of threshing is unfavorable and water loss, death, also avoid heap retting, appropriate is mining is sowing, hide not durable, interesting conditions of storage, bagged three months namely all lose hair pressure, stored, and the mixed sand pressure can keep half a year, seed germination time average temperature should be above 18 ℃, usually in late August will close planting seeds in wet sand or soil bed, begin to bud in late September, October is the germination stage, and germination rate can reach 80%. Sorrowless Tree in Cambodia's Phnom Penh Palace, tall trunk, beautiful flower shape, is the sacred flower in Buddhism.
Sorrowless Tree can raise lac worms and is an excellent host of lac worms.
The flowers of Sorrowless Tree are large and beautiful, and it is a good garden greening and ornamental Tree species.