How many plants should I plant in a 9 x 22 container?

Answer #2 · Gardenality.com's Answer · Patricia - Even though more flowers are planted in a given space in a container than in the same given space in a garden bed, I still don't like to overcrowd containers with too many plants. Doing so, the plant roots will have to compete for soil space and the container garden will require more water when the heat of summer arrives and the plants have filled out. That being said, and given the plants you want to use, you could put no more than 6 upright (old-fashioned) petunias or 2 to 3 of the spreading-type petunias, such as Wave or Supertunias. If it were me, I would use the spreading petunias to cascade over the edge of the container. Then maybe put 3 to 6 of the bronzeleaf or greenleaf begonia evenly spaced. Then, if you're using the taller growing African Marigolds with the larger flowers, maybe put 3 to 6 of these spaced between the begonias. If it were me, I would probably go with the lower number of begonia and marigold.

Hope this info was helpful,
Brent)