7 Steps to Growing Lobelia in Containers

What You'll Need
Lobelia Plants

Lobelia is a popular choice among container plants. They are particularly appealing when their blue and white petals come out over a flower pot or window box. What sets the Lobelia apart from the other container plants is that they will not bloom in temperatures that are close to 80 degrees. Lobelia love the cooler temperatures and reward the homeowner with great looking blooms that are bright and vibrant. Growing Lobelia plants in a containers is done in a few simple steps.

Step One - Choose Healthy Plants

When you go to the nursery to find your Lobelia look for healthy plants that are free from disease and not wilting. The plants you choose should be stocky and full. You will also want plants that do not have flowers yet. This will help the plant put its energy towards rooting in the new soil rather than producing blooms.

Step Two - Growing From Seedlings

If you want to take the route of growing your Lobelia annuals from seed, you will need to start them three weeks before spring. Start the seeds in a soil-less potting mix in a low container. Keep it moist by spraying water and place it in a warm sunny spot.

Step Three - Work Compost into Potting Soil

Before you plant your Lobelia into a pot at your home you will need to mix in a little organic compost into the potting soil. The richness of the compost will give the plant a good start in setting its roots. Lobelia plants like soil that is very rich in organic matter.

Step Four - Concentrate on Growth

As the new plant begins to grow it will start to form blooms on its stems. Pinch back these blooms so the plant will concentrate all of its energy into producing a fuller bush. Once the plant is as full as you want it you can let the flowers bloom.

Step Five - Keep in Sun

Lobelia will need at least 5 to 6 hours of sunlight in order to continue growing. Find a place that will provide this much sunlight. You can place them outside as long as they are in temperatures that do not get above 80 degrees.

Step Six - Water Regularly

When the plant is in a lot of sun during the day it will need a lot of water. However, do not water when the soil is still moist to the touch. At the same time, do not let the soil dry out completely. This can damage the roots and cause distress to the Lobelia.

Step Seven - Fertilize Often

Lobelia does best in rich soil. If there is not any organic compost available to keep worked into the potting soil use a water soluble fertilizer every other watering. Fish fertilizer will also help to keep the plant fresh, vibrant, and robust because of the great nutrients that are in it.