INDOORS IN WINTER OR SOWN DIRECTLY INTO THE GROUND OR CONTAINERS IN SPRING, SUMMER, OR FALL. NO SPECIFIC PESTS OR DISEASE PROBLEMS. INSTRUCTIONS INCLUDED. WE ALSO HAVE THE FOLLOWING COLORS OF ASTILBE LISTED ON eBay: WHITE, RED, PINK AND AN ASTILBE MIX. COMBINED SHIPPING DISCOUNT.....ALL ADDITIONAL ITEMS SHIP FREE. WE SPECIALIZE IN RARE, UNUSUAL AND BEAUTIFUL FLOWERS THAT ARE EASY TO GROW FROM SEED. PLEASE SEE ALL OF THE OTHER UNIQUE FLOWER SEEDS WE HAVE LISTED ON eBay...JUST CLICK "OTHER ITEMS" ON UPPER RIGHT OF THIS LISTING. Due to varying conditions regarding germination (moisture, temperature, soil contamination, not to mention buyer experience and knowledge and experience of germination)... I cannot guarantee germination rate of seeds. All of our seeds are fresh, viable, and tested. I send instructions. If you have questions or concerns... you can always contact me through eBay messages.