Geraniums grown in pots will bloom all season and longer if the pots are taken in the house before the first frost strikes. Geraniums can be planted in hanging baskets or potted in a container to sit on the patio or front porch. Geranium blooms are available in a variety of colours, including pink, white and red. Geraniums grown in containers require some care to become large and healthy plants with a continuous show of blooms.
Mix 1 part vermiculite, 1 part peat moss and 1 part compost. Fill your selected container with the soil mix, stopping 1 inch from the top. Make sure the pot has drainage holes on the bottom.
Plant the geranium seedling in the planting medium, at the same depth that it was growing in the nursery pot.
Water the geranium to soak the planting medium. For containers with drainage trays, wait 30 minutes for the excess water to drain into the tray. Remove the tray and empty the water. Replace the tray. Water when the top 1 inch of medium is dry. Test the soil by sticking your finger in the medium 1 inch. Add water if the soil is dry. Wait if the planting medium is damp.
Place the geranium in a sunny location where it will have at least six hours of sun. Geraniums are sun-loving plants, but too much sun without enough water will cause the flowers to droop and die back.
Fertilise the plant with 10-10-10 (nitrogen-phosphorous-potassium) liquid or slow-release granular fertiliser once a month. Follow the directions on the fertiliser package. Add only the amount of fertiliser recommended for the container size you are using.
Pinch off dead flowers, using pruning shears or your fingers. This promotes new blooms throughout the season. Bring the geranium indoors in fall before the first frost to keep it growing.