The Salad Greens Kit AERO502 for the AeroGarden 7 germinates in days. You can begin harvesting as soon as 2.5-weeks and you can start to enjoy daily harvests of garden fresh lettuce. Produces fresh lettuce with no pesticides or washing needed. Perfect for tossing salads, adding to sandwiches or garnishing your meals. Will continue to harvest for three to four months.