lobelia

Lobelia 'Purple Towers' should be watered deeply but infrequently. Water at the base of the plant when the top 2 inches of soil are dry to the touch. Aim to water once every 7-10 days. During hot, dry weather, you may need to water twice a week. Make sure not to waterlog the soil or let it dry out completely. Fertilize your Lobelia 'Purple Towers' every 6-8 weeks with a general purpose fertilizer.

Lobelia 'Purple Towers' need between 4-6 hours of direct sunlight each day, either in the morning or the late afternoon. When providing this plant with the appropriate amount of direct sunlight, you can expose it to indirect light for the rest of the day and keep it away from direct sunlight during the middle of the day when the sun is at its hottest.

For Pruning Lobelia 'Purple Towers', prune plants back by about 1-third in early spring (just as bud tips start to swell). You can also do a light trimming of the dead blooms at the end of the growing season to help maintain the attractive size and shape of the bush. It's important to be careful not to over-prune the plant, as too much cutting can reduce the flowering potential and damage the plant structure. Remember to always use clean, sharp tools when pruning and properly sanitize them between cuts.