Life Span
Perennial
Perennial
Type
Epiphyte
Grass
Origin
Southeastern United States, Latin America and the Caribbean, Caribbean, Central America, South America
-
Types
-
Calamagrostis x acutiflora 'Overdam'
Number of Varieties
32
0
40000
👆🏻
Habitat
Swamps
Grassland, low mountains, Semi desert, Woodlands
USDA Hardiness Zone
10-135-9
0
99
👆🏻
AHS Heat Zone
12-9
9 - 5
Sunset Zone
H1, H2, 23, 24
2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Habit
Clump-Forming
Upright/Erect
Plant Size
Minimum Height
30.50 cm90.00 cm
0
3900
👆🏻
Minimum Width
25.60 cm60.00 cm
0
6350
👆🏻
Plant Color
Flower Color
White, Burgundy, Dark Red, Light Green, Violet, Dark Salmon
-
Flower Color Modifier
Multi-Color
Bicolor
Fruit Color
-
-
Leaf Color in Spring
Green
White, Green
Leaf Color in Summer
Green
Light Green
Leaf Color in Fall
Green
White, Green, Orange, Gold
Leaf Color in Winter
Green
Gold, Tan
Shape
Leaf Shape
Long Linear
Linear
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall
Summer, Fall, Winter
Growing Conditions
Sunlight
Partial Sun, Partial shade
Full Sun, Partial Sun, Partial shade
Growth Rate
Slow
Fast
Type of Soil
-
Clay, Loam, Sand
The pH of Soil
Neutral, Slightly Acidic
Acidic, Neutral, Alkaline
Soil Drainage
Well drained
Average
Bloom Time
Late Spring, Early Summer, Summer, Late Summer, Early Fall, Fall, Late Fall
Summer, Late Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
-
Wet Site, Pollution, Drought, Salt, Soil Compaction
Where to Plant?
Container, Ground, Pot
Ground
How to Plant?
Bulbs, By dividing rhizomes, tubers, Divison
Seedlings
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Average Water Needs, Do Not over Water, Requires regular watering
Average Water Needs
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
Neutral, Slightly Acidic
Acidic, Neutral, Alkaline
Soil Type
-
Clay, Loam, Sand
Soil Drainage Capacity
Well drained
Average
Sun Exposure
Partial Sun, Partial shade
Full Sun, Partial Sun, Partial shade
Pruning
Remove damaged leaves, Remove dead branches, Remove dead leaves
Remove damaged leaves, Remove dead branches, Remove dead leaves
Fertilizers
All-Purpose Liquid Fertilizer
All-Purpose Liquid Fertilizer
Pests and Diseases
Red blotch
Red blotch
Plant Tolerance
Drought
Drought
Flowers
Showy
Showy
Flower Petal Number
Single
Single
Fruits
Showy Fruit
✔
✘
✔
✘
Edible Fruit
✔
✘
✔
✘
Fragrance
Fragrant Flower
✔
✘
✔
✘
Fragrant Fruit
✔
✘
✔
✘
Fragrant Leaf
✔
✘
✔
✘
Fragrant Bark/Stem
✔
✘
✔
✘
Showy Foliage
✔
✘
✔
✘
Showy Bark
✔
✘
✔
✘
Foliage Texture
Coarse
Fine
Foliage Sheen
Glossy
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Bees, pollinators
Birds
Allergy
-
Skin irritation
Uses
Aesthetic Uses
Bouquets, Showy Purposes
-
Beauty Benefits
-
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification
Air purification
Plant Benefits
Medicinal Uses
Cancer, Eye Problems
-
Part of Plant Used
Bulbs, Flowers, Leaves
Whole plant
Other Uses
Used as Ornamental plant
Used as Ornamental plant
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Container, Feature Plant, Houseplant, Mixed Border
Dried Flower / Everlasting, Cutflower, Foundation, Mixed Border, Wildflower
Botanical Name
PROSTHECHEA cochleata
CALAMAGROSTIS x acutiflora 'Overdam'
Common Name
Clamshell Orchid, Cockleshell Orchid, Black Orchid
Feather Reed Grass, Overdam Feather Reed Grass
In Hindi
Clamshell Orchid
Overdam घास
In German
Clamshell Orchid
Overdam Grass
In French
Clamshell Orchid
Overdam Herbe
In Spanish
Clamshell Orchid
Overdam Hierba
In Greek
Encyclia Cochleata
Overdam Grass
In Portuguese
Clamshell Orchid
Overdam Relva
In Polish
Clamshell Orchid
Overdam Trawa
In Latin
Clamshell Orchid
Overdam Trawa
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
-
Class
Liliopsida
-
Order
Orchidales
Poales
Family
Orchidaceae
Poaceae
Genus
Prosthechea
Calamagrostis
Clade
Angiosperms, Monocots
Angiosperms, Commelinids, Monocots
Tribe
Epidendreae
-
Subfamily
Epidendroideae
Amaryllidoideae
Number of Species
50260
1
27800
👆🏻