Many growers really do cut down their plants within the given timeframe, and for others, their autoflower seed to harvest time is even shorter. Nevertheless, there are many instances where growers had to wait several weeks longer. Interestingly, the more cutting-edge auto genetics by FastBuds take longer than older strains by this same breeder. The following guide is based on an autoflowering https://lamotagrow.com/how-many-days-do-autoflowers-take/ cultivar that takes 10 weeks from seed until harvest. Week 1 During the earliest stages of growth, the seedling will only grow as tall as one inch, producing its first set of leaves. By this time, the tap root of the seedling will grow downwards anchoring itself to the base of the pot.