Hydrangeas are popular flowering shrubs that can be grown in the garden. Some compact varieties are suitable for growing in containers, too. Hydrangea bushes produce showy flower heads that add color to the landscape during the summer months. The flowerheads can also be cut and brought indoors for floral displays. Direct Gardening's selection of hydrangeas for containers features plants with more compact habits and ones that have been proven to grow well in patio pots. When choosing hydrangeas for sale online, make sure they are suitable for your grow zone. Then consider how much sunlight they need as well as their soil requirements, mature height and spread, flower color and bloom time.