Species cardinal flower Guide
deep red flowers with green sepals and stems

cardinal flower

Lobelia cardinalis

Cycle:

Herbaceous Perennial

Watering:

Frequent

Propagation:

Division,Cutting,Seed Propagation,Layering Propagation

Hardiness Zone:

3 - 9

Flowers:

Scarlet red, white or rose Flowers In Summer

Sun:

Full sun only if soil kept moist, Part sun/part shade

Soil:

Sandy Loamy Clay Humus

Fruits:

brown Fruits In Autumn Ready In Fall

Leaf:

Yes

Leaf Color:

green

Growth Rate:

High

Maintenance:

Low

Salt Tolerant:

Yes

Invasive:

Yes

Care Level:

Medium

watering

Cardinal flower (Lobelia cardinalis) should be watered deeply once a week during the growing season. Let the soil dry out slightly between watering. During periods of drought, extra water may be necessary. This species does not like overly wet soils, so water as needed only and check soil moisture regularly.

sunlight

Cardinal flower (Lobelia cardinalis) grows best in full sun to partial shade. Generally, it requires 6 hours of direct sunlight per day, ideally in the morning or early afternoon (not in the hottest part of the day). This species also enjoys growing in moist, acidic soil with good drainage. If the soil is too dry, the trunks may need to be watered occasionally. Cardinal flower does not do well in hot, humid climates. It is better suited for cooler climates, such as those found in northern regions.

pruning

Cardinal flower (Lobelia cardinalis) requires very little pruning. It can be done at any time that is convenient for you to do so. The plant should be pruned in late winter or early spring before it begins to grow new shoots. To prune, simply remove any dead or damaged branches, and any that are too long or too high. Make sure to leave some foliage around the base of the plant for protection during the cold winter months. If the plant is too tall, you can prune it by about a third of the height at this time. If it is growing too wide, you can cut back 1 or 2 of the longest branches. Pruning will help encourage more dense, bushy growth.