How to Plant Black Eyed Susan Seeds Eden Brothers Planting Guides Mini Ornamental Mint Seeds Park Seed These asparagus seedlings have been growing in the greenhouse for about 6 weeks and they are finally ready to pot up! Potting up is the process of moving a plant up from This is how I grow lettuce from seed. I begin starting lettuce seeds in March and plant out in the garden in April. In about 60 days, theyre ready to harvest. If you are interested in saving seed,