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The following instructions will work for all species.
Cycads seeds have a large embryo which must be well developed before the seeds can germinate. If they are very fresh, the seeds of cycads native to drier climates may need a rest period in order to fully develop. Please ask us if you are unsure. Before planting, soak seeds in warm water for 1-3 days. Desiccated seeds may be slightly loose in the shell a little when shaken (they should not, however, rattle). This does not affect their viability. Most cycad seeds sink in water, which is an easy way to check their viability. Seeds of some species float naturally though, such as Cycas thouarsii, Cycas rumphii and Cycas edentata.
For sowing, use a free draining mix of peat, cocofiber and sand, perlite, or a similar medium. It should be kept moist but never wet. Fill a pot and bury the seeds only halfway in the medium. Cover with clear plastic and label with species name and date. The baggie method, as recommended for palms, will also work but seeds should stay on top of the medium.
No light is required for germination. Most cycads germinate best at temperatures between 25 and 30°C (75 to 90°F). Check weekly for signs of activity by looking for white roots through the plastic. Ensure that the medium does not dry out. Most cycads will sprout after 4-8 weeks.
After the seeds have sprouted, plant each in a tall, narrrow pot using a well drained medium, label, and place in ample light. Species from drier habitats can take full sun from an early age. Aim to keep the soil moist but never wet, feed and repot as required.
More information can be found in the comments on the species pages. We also recommend consulting one of the books on cycads available through this web site.
Links:
The Cycad Pages by the Royal Botanic Gardens Sydney
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At rarepalmseeds.com you can choose from the most spectacular selection of rare seeds in the world: palms, cycads, tree ferns, succulents, conifers, tropical trees and more, many not available anywhere else. Wholesale and retail quantities in packet sizes from two to 100,000 seeds are delivered worldwide. We supply enthusiasts and collectors as well as botanical gardens, nurseries and seed dealers of all sizes. Superior quality, viability and correct identification is ensured by renowned palm expert Tobias W. Spanner. Many new and rare species are constantly being added.
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