Annual Plant Containers

Size Considerations

• The types of annuals you grow play an important role in determining the size of your plant containers. Keeping the plants in proportion to the containers helps to create a balanced look. Large containers offer adequate space for multiple plants or single large annuals, such as larkspur (Ranunculaceae). Smaller pots are easier to handle and allow you to rearrange your plantings as they move into and out of their blossoming seasons. A container should allow plenty of space for root maturity and have a solid base to keep it from blowing over in the wind.

Drainage

• Like other plants, annuals vary in their ability to tolerate standing water. Most prefer well-drained soil and may develop fungal problems in the presence of excess moisture. Choosing pots with drainage holes helps to ensure optimal root health. Placing a layer of gravel over the bottom of the containers will help hold in the soil while allowing the water to drain. Drip trays below the containers help to keep the patio or sidewalks clean and dry.

Hanging Planters

• Annuals are good selections for placing in hanging containers. These above-ground planters enhance the upper area of porches, pergolas and balconies. Due to the close proximity of overhead structures, hanging containers usually require small plants, vines or groundcovers. Annuals suitable for growing in hanging planters include Johnny-jump-up (Violaceae), dwarf phlox (Polemoniaceae) and candytuft (Brassicaceae).

Planting

• Proper planting techniques help ensure the longevity of annuals, keeping them fresh throughout the growing season. Plant both annual vegetables and annual flowers in the containers at a depth equal to their previous planting depth. Keeping the surface soil over the rootballs even with the surrounding soil helps avoid pockets that hold in water or hills that shed the water away from the young roots. Placing the container in an outdoor location that receives adequate sunlight and shelter from blowing wind and rain will help to protect these potted annuals.