Germination temperature
Warm: tropical bamboo germinates best around 30 °C (86 °F) and slowly at 20 °C (68 °F).
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1 growing guide
Bamboo seed is rare and short-lived: most clumps flower only once in decades, often together, and the seed loses viability within months. Sow it as soon as it arrives.
Bamboos are woody grasses (Poaceae) in many genera, such as Bambusa and Dendrocalamus in India. Most seed-producing bamboos flower only at long intervals, about 30-70 years according to the Bamboo Technical Support Group (KFRI), and many flower gregariously: whole clumps, or all plants of a species across a region, flower at once and the old clumps then die. Seed is therefore available only in some years and from some species; others, such as Bambusa balcooa and B. vulgaris, set no viable seed and are grown from culm cuttings or rhizome division. The seed is a grain like rice. It needs no treatment but is short-lived, so freshness decides success.
Warm: tropical bamboo germinates best around 30 °C (86 °F) and slowly at 20 °C (68 °F).
None required. An overnight soak lets you discard floating, empty seed; Indian nurseries also dress seed with fungicide or neem extract.
Starts in about 5-10 days for fresh Bambusa bambos seed (PROSEA); a seedbed keeps emerging for 25-30 days.
Short. Most bamboo seed loses viability within one to two months (KFRI); PROSEA gives 3 months for B. bambos unless kept cool or dry, TNAU up to 8-10 months at room temperature.
India: as soon as seed is collected, so seedlings are ready for planting at the start of the rains. Cool climates: sow fresh seed in a heated propagator.
Do not store bamboo seed if you can avoid it. If you must wait, keep it dry and sealed in the refrigerator; PROSEA reports about 6 months' viability at 5 °C (41 °F).
Sow in drills or holes about 5 mm (0.2 in) deep in soil, sand and compost 3:1:1, or in trays of vermiculite, cover with sand and keep moist under a shade net.
At the four- to six-leaf stage, move seedlings into polybags of soil, sand and manure and keep them in 50-75% shade for one to two months, then harden them in sun.
KFRI plants seedlings at 3-4 months; TNAU at 1-1.5 years in larger bags.
How to grow bamboo from seed (Bambusa bambos) covers the most commonly seeded Indian bamboo in full: storage, nursery beds, shade and planting out.
The Bambusa seeds guide covers the same nursery method for the genus; species that set no seed are propagated from cuttings.
At room temperature many lots die within a few months. Sow on arrival or refrigerate sealed.
Waterlogged substrate kills bamboo seed; keep it moist, not wet.
Seedbeds and young plants need partial shade until hardened.
Flowering is rare and irregular, so seed of a given species may not be offered again for years.
Sow bamboo seed as soon as it arrives, shallow and warm, and grow seedlings on in shade.
Most bamboos flower only once in decades, often all at the same time, and then the old clumps die. PROSEA gives (16-)32(-45) years for Bambusa bambos.
Briefly. Many lots lose viability within one to three months at room temperature; cool, dry, sealed storage extends this to several months.
Open the guide that matches the seed name on your packet.