Selection, selection, selection.
Nurseries tend to stock only tried-and-true varieties. If you start your own seeds, the selection is virtually limitless.
Earlier harvests and blooms.
You can jump-start the season and enjoy fresh food and flowers sooner.
More for less.
Even after you figure the cost of seed-starting supplies, growing your own transplants is still cheap. At the garden center, a flat of 36 petunias, for instance, will cost you about $12, but a packet of 100 seeds costs only $2 or so.
Strong, healthy transplants.
Who knows how long those store-bought seedlings languished in the greenhouse? By growing your own plants, you control quality.
No need to worry about chemicals. You can make sure your garden is organic from seed to fruit and flower.
More Seed Starting resources: