Species swamp dogwood
lime leaves and flowers with lime-pink stems

swamp dogwood

Cornus amomum subsp. obliqua

Swamp dogwood, also known as Cornus amomum subsp. obliqua, is an amazing species of flowering shrubs that can often be found growing along sluggish streams or in marshes. This is a multi-stemmed, deciduous shrub with dark green, oblique-elliptic leaves that will turn a beautiful bright red in the fall. Its natural beauty is further enhanced by white flowers in June and white aerial fruiting clusters in late summer. In addition, its cultivars can be seen in various shades of yellow and pink. Its adaptability makes it the perfect plant for wildlife areas, gardens and wetland margins, giving it its amazing status.

Cycle:

Perennial

Watering:

Frequent

Propagation:

Seed Propagation,Cutting,Layering Propagation,Division

Hardiness Zone:

4 - 8

Flowers:

Yellowish-white Flowers

Sun:

Full sun,part shade

Leaf:

Yes

Leaf Color:

green

Growth Rate:

Low

Maintenance:

Moderate

Salt Tolerant:

Yes

Care Level:

Medium

watering

Swamp dogwood should be watered once or twice a week to keep the soil moist but not soggy. Water should be applied at the base of the plant, as opposed to overhead watering, to prevent possible mildew and fungal issues. During germination and growth spurts, it may benefit from supplemental watering. Allow the top inch of soil to dry out between waterings. Spring and summer watering should be done with care to avoid waterlogging, due to the plant’s sensitivity to overly wet soil. During the fall and winter, restrict watering to only when soil becomes dry.

sunlight

Swamp dogwood plants typically prefer partial shade environments, with indirect light from the sun for roughly 4 to 6 hours a day. As this species of plant prefers moist soil and air, the ideal level of sunlight should not cause the soil to dry out too much. In the case of this plant, it is best to provide the necessary light in the morning and late afternoon when the temperatures are still low but the light is most intense. Additionally, as this species of plant is native to the eastern United States, it is best to expose it to direct light when the sun is not too harsh due to their tendency to be shade-sensitive.

pruning

Swamp dogwood can be pruned at any time of year however they should be pruned in early to mid-spring for optimal growth and health. Pruning should be done as minimally as possible, only removing dead, damaged, or diseased branches and stems. During the spring, remove any crossing, rubbing, or dead branches and stems. Pruning should be done at the desired height and width of the plant and not to remove excess foliage. To maintain dense foliage, remove 1/3 to no more than ½ of the 3-4 year old branches. Follow the general guidelines of pruning: make a clean cut at a slight angle just above an outward facing bud. Make sure to disinfect your pruning shears with isopropyl alcohol before and after pruning to help prevent any spread of diseases.

Season

Fall
Winter
Spring
Summer
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Starts Flowering

Swamp dogwood typically starts flowering in late April or early May.

Hardiness Map