blue cardinal flower

The blue cardinal flower requires consistent moisture during the growing season. It is best to water the plant fairly often, so the soil should be kept evenly moist, but not soggy. Water once or twice a week when temperatures are high, and reduce the frequency of watering to once or twice a month when temperatures are cooler. Make sure to allow the surface of the soil to dry out slightly in between waterings and always make sure the soil drains well, as the plant does not tolerate wet feet.

The blue cardinal flower (Lobelia siphilitica) does best in locations with full to partial sun. A location with direct sunlight for about 4 to 6 hours per day is ideal for this plant species. During the hottest part of the day, the blue cardinal flower prefers partial shade. This species will also do well in sheltered locations as long as it receives enough sunlight. It is important to keep the soil of the blue cardinal flower moist, especially during the heat of the day, and to provide adequate drainage.

Blue cardinal flower (Lobelia siphilitica) should be pruned in late winter or early spring when plants are still dormant. The amount of pruning depends on the size and condition of the plant, but generally, 1 should remove any dead or damaged foliage, as well as any excess foliage that has grown over the summer. Pruning should also be done to encourage healthy new growth in the spring, as well as to keep the plant in a maintained and attractive shape. To prevent dieback and improve air circulation, larger branches can be thinned and cut back as needed to help promote new healthy growth. Prune carefully to avoid harming the rest of the plant; remove any dead, diseased, or damaged foliage only.