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Maryland senna
Also known as: American senna
The foliage of maryland senna(Senna marilandica) gives off a malodorous scent when it's ground up. Because of the unpleasant taste, this species is usually ignored by deer.
Scientific classification
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Perennial
Lifespan
90 cm to 1.8 m
Spread
Green
Leaf Color
2.5 cm
Flower Size
Yellow, Gold
Flower Color
Deciduous
Leaf type
5 - 32 ℃
Ideal Temperature
Rapid
Growth Rate

Images of Maryland senna

Attributes of Maryland senna

Growth Rate
In spring and summer, maryland senna exhibits a rapid growth rate, vigorously expanding leaf production and swiftly reaching maturity. The accelerated growth manifests in notable height increments and profuse flowering, with the plant using the extended daylight hours to maximize photosynthesis. Variances in growth are observed in different seasonal conditions, underlining the interplay between growth speed and active growing seasons.

Distribution of Maryland senna

Distribution Map
Native to the eastern part of North America, maryland senna has spread beyond its original range. It has been introduced to regions within the African, European, and Asiatic continents. The plant is also cultivated, which suggests an expanding human-facilitated presence beyond its natural distribution.
Native
Cultivated
Invasive
Introduced
No species reported
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Habitat
Thickets, dry roadsides, disturbed areas, sandy fields, open woods
Hemisphere Trend Curve

Culture

Symbolism
Love
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Quickly Identify Maryland senna

1
Vibrant butter-yellow flowers in racemes or panicles, transitioning to white as they age.
2
Distinct dark brown, tightly closed seedpods measuring 3-6 inches (7.5-15 cm) in length.
3
Smooth, light green stem with a slightly velvety texture, supporting the plant's bushy form.
4
Pinnately compound leaves with 6-12 pairs of oval leaflets, parallel prominent veins.
5
Flattened, elongated fruit pods, dark brown at maturity, sectioned into 10-18 segments.
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Care Guide for Maryland senna

Every 2 weeks
Water
Full sun
Sunlight
5 - 32 ℃
Ideal Temperature
Garden Soil
Soil Type
Water: Maryland senna thrives in dry spells followed by heavy rainfall and is drought-tolerant. Water every two weeks, allowing soil to dry between sessions. Typically grown outdoors, it requires well-draining soil to prevent waterlogging and maintain healthy roots during wetter seasons.
Fertilize: Maryland senna thrives with balanced nutrition through equal part fertilizers (N-P-K, e.g., 10-10-10) and high phosphorus for flowering. Fertilize in spring and mid-summer, avoiding overload. Young plants need frequent feeding. Use slow-release types and water after application for better absorption.
Pruning: Maryland senna is a flowering perennial with vibrant yellow flowers. Prune in early spring by removing dead stems and overcrowding, cutting back by one-third to promote growth. Avoid heavy pruning to ensure future blooms, as regular maintenance enhances overall plant health.
Propagation: Maryland senna propagation is best achieved by sowing fresh seeds in well-draining soil. Soaking seeds overnight in warm water can improve germination. Sow shallowly, keeping the soil moist but not waterlogged, and place in a warm, sunny spot for optimal growth.
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