1000pcs Mentha Viridis Seeds Mint Spearmint Spicata Peppermint Description: The growth condition of Mentha Viridis: Mentha Viridis has good adaptability to the environment conditions. Likes warm,humid and sunny environment,general appropriate growth in 25 ~ 30  condition. The greater temperature difference of day and night,the more conducive to plant essential oil accumulation in the body. Heat and cold resistant,above 30  can still normal growth, under the low temperature of 20  below zero underground rhizomes can still survive. How to sow: Soak in warm water for 6 hours before planting Breeding is given priority to sow,also cse division of suckers,cuttage. Sowing in September to October or March to April. Sowing in Autumn, then seedling in winter,in the northern winter leaves will freeze to death,in the spring germination again,rowth lush. Germination temperature is 13 ~ 16 ,optimal growth temperature is 10 ~ 25 . Feature: Plant height:40-130cm Germination time:7 to 10 days Mature time:80-90 days Germination temperature:13  t o 25  Flowering time:Spring:April to August Summer:September to December Package include: 1x 1000pcs Mentha Viridis Seeds Notice: 1.Please allow 1-3mm error due to manual measurement,pleease make sure you do not mind before you bid. 2.The colors may have different as the difference display,please understand.