Most of the tree seeds need special pretreatment before sowing. A short note on seed pretreatment and nursery consideration are enclosed in the consignment upon purchasing seeds from TTSA. We encourage customers give all information on viability, pretreatment and storage prescriptions to the responsible seed handling staff at the nursery (or the seed store) to ensure seed viability is maintained. Upon request, TTSA can help regarding pretreatment for certain species, especially hard coated species, e.g. Acacia, Tamarindus, Afzelia, Julbernadia etc. See list of species below for further reading.

No	Species	Year		No	Species	Year		No	Species	Year
53	Acacia auriculiformis	1996		112	Caesalpinia trothae	1999		20	Markamia lutea	1995
47	Acacia drepanolobium	1996		54	Calliandra callothyrsus	1996		44	Markhamia obtusifolia	1996
79	Acacia kirkii	1997		59	Casuarina equistifolia	1996		84	Melia azedarach	1998
52	Acacia mangium	1996		60	Casuarina jughuhiana	1996		13	Milicia excelsa	1995
51	Acacia mearnsii	1996		28	Cedrela odorata	1995		116	Moringa oleifera	1999
66	Acacia mellifera	1997		105	Cephalosphaera usambarensis	1999		18	Newtonia buchananii	1995
65	Acacia nigrescens	1996		103	Cordia africana	1999		104	Ocotea usambarensis	1999
49	Acacia nilotica	1996		86	Croton megalocarpus	1999		97	Parinari curatelifolia	1999
48	Acacia polyacantha	1996		120	Cupressus lusitanica	2005		61	Peltophorum pterocarpum	1996
50	Acacia senegal	1996		9	Dalbergia melanoxylon	1995		26	Pinus carbaea	1995
68	Acacia seyal	1997		55	Delonix elata	1996		25	Pinus patula	1995
99	Acacia tanganyikensis	1999		58	Delonix regia	1996		43	Pinus tecunumanii	1996
4	Acacia tortilis	1995		76	Dodonea viscosa	1997		27	Pithecelobium dulce	1995
67	Acacia xanthophloea	1997		118	Dovyalis caffra	2004		17	Podocarpus usambarensis	1995
85	Acrocarpus fraxinifolius	1999		19	Erythrina abyssinica	1995		7	Pterocarpus angolensis	1995
62	Adansonia digitata	1996		92	Erythrina burtii	1999		45	Pterocarpus tintorius	1996
12	Afzelia quanzensis	1995		36	Eucalyptus camaldulensis	1996		93	Sclerocarya birrea	1999
41	Albizia gumifera	1996		38	Eucalyptus citriodora	1996		30	Senna siamea	1996
69	Albizia harveyi	1997		72	Eucalyptus cloeziana	1997		57	Senna spectabilis	1996
6	Albizia lebbeck	1995		39	Eucalyptus ficifolia	1996		33	Spathodea campanulata	1996
100	Albizia petesiana	1999		40	Eucalyptus globulus	1996		110	Sterculia appendiculata	1999
11	Albizia schimperiana	1995		23	Eucalyptus grandis	1995		78	Swrtzia madagascariensis	1997
101	Albizia tanganyicensis	1999		37	Eucalyptus maidenii	1996		21	Syzygium cuminii	1995
107	Allanblackia stuhlmanii	1999		71	Eucalyptus robusta	1997		29	Syzygium guineense	1996
111	Antiaris toxicaria	1999		35	Eucalyptus saligna	1996		10	Tamarindus indica	1995
5	Azadirachta indica	1995		24	Eucalyptus tereticornis	1995		3	Tectona grandis	1995
95	Azanza garckeana	1999		1	Faidherbia albida	1996		89	Terminalia catapa	1999
34	Balanites aegyptiaca	1996		117	Gliricidia sepium	2003		81	Terminalia ivorensis	1998
102	Bauhinia petersiana	1999		63	Grevillea robusta	1996		119	Terminalia mantaly	2004
74	Bauhinia purpurea	1997		80	Hakea saligna	1997		90	Terminalia sericea	1999
73	Bauhinia variegata	1997		46	Jacaranda mimosifolia	1996		83	Terminalia surpeba	1998
109	Beishemidia kweo	1999		22	Juniperus procera	1995		70	Trichilia emetica	1997
114	Berchemia discolor	1999		2	Khaya anthotheca	1995		31	Uapaca kirkiana	1996
91	Bixa orellana	1999		98	Khaya senegalensis	1999		16	Vangueria infausta	1995
115	Bombax rhodognophalon	1999		88	Leucaena diversifolia	1999		42	Vitex doniana	1996
77	Burkea africana	1997		56	Leucaena leucocephala	1996		15	Vitex keniensis	1995
75	Buea mssassaiensis	1997		14	Maesopsis eminii	1995		64	Vitex mombassae	1996
								32	Xeroderris stuhlmanii	1996
								8	Ziziphus abyssinica	1995