Life Span
Perennial
Perennial
Type
Palm or Cycad
Flowering Plants
Origin
Australia
South-Central United States
Types
Walsch River Palm
King Palm
Myola King Palm
Purple Crown Shaft King Palm
Peach River Palm
Penstemon digitalis, Penstemon barbatus, Penstemon heterophyllus
Number of Varieties
6200
0
40000
👆🏻
Habitat
Coastal Mountains, Coastal Regions, gardens, Suburban areas
Rocky areas
USDA Hardiness Zone
10-145-8
0
99
👆🏻
AHS Heat Zone
12-10
12-1
Sunset Zone
H1, H2, 21, 22, 23, 24
No Available
Habit
Arching/Fountain-shaped
Clump-Forming
Plant Size
Minimum Height
610.00 cm30.00 cm
0
3900
👆🏻
Minimum Width
460.00 cm30.50 cm
0
6350
👆🏻
Plant Color
Flower Color
White, Yellow, Lavender
White, Purple
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Red
-
Leaf Color in Spring
Green, Silver
Green
Leaf Color in Summer
Green, Silver
Green
Leaf Color in Fall
Green, Silver
Green
Leaf Color in Winter
Green, Silver
-
Shape
Leaf Shape
Long Elliptic
Long linear and narrow
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
-
Growing Conditions
Sunlight
Full Sun, Partial Sun
Full Sun, Partial Sun
Growth Rate
Fast
Medium
Type of Soil
Clay, Loam, Sand
Loam
The pH of Soil
Acidic, Neutral
Neutral, Alkaline
Soil Drainage
Well drained
Well drained
Bloom Time
Indeterminate
Late Spring
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Wet Site
-
Where to Plant?
Ground
Ground
How to Plant?
Seedlings
From bulbs
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Do not water frequently, Keep the ground moist but not water-logged, Over-watering can cause leaf problems or root diseases, Water Deeply
Requires watering in the growing season
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
Acidic, Neutral
Neutral, Alkaline
Soil Type
Clay, Loam, Sand
Loam
Soil Drainage Capacity
Well drained
Well drained
Sun Exposure
Full Sun, Partial Sun
Full Sun, Partial Sun
Pruning
Prune if you want to improve plant shape, Remove deadheads, Remove shoots
Remove damaged 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
Bold
Medium
Foliage Sheen
Glossy
Matte
Evergreen
✔
✘
✔
✘
Invasive
Sometimes
-
Self-Sowing
✔
✘
✔
✘
Attracts
-
Hummingbirds, Butterflies
Allergy
-
-
Uses
Aesthetic Uses
Beautification
Showy Purposes
Beauty Benefits
-
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification
Air purification
Plant Benefits
Medicinal Uses
-
-
Part of Plant Used
Whole plant
Flowers, Leaves
Other Uses
Decoration Purposes, Used as Ornamental plant
Showy Purposes, Used as Ornamental plant
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Container, Feature Plant, Street Trees, Tropical, Water Gardens
Bedding Plant, Rock Garden / Wall, Wildflower
Botanical Name
ARCHONTOPHOENIX alexandrae
PENSTEMON cobaea
Common Name
Alex Palm, Alexandra Palm, Princess Alexandra Palm
Beardtongue
In Hindi
Alexandra palm
Beardtongue
In German
Alexandra palm
Bartfaden
In French
Alexandra palme
beardtongue
In Spanish
Alexandra palma
beardtongue
In Greek
Αλεξάνδρα παλάμη
Beardtongue
In Portuguese
Alexandra palma
Beardtongue
In Polish
Alexandra dłoni
Beardtongue
In Latin
Alexandra palma
ursus lingua
Kingdom
Plantae
Plantae
Phylum
-
Tracheophyta
Class
Liliopsida
Equisetopsida
Order
Arecales
Lamiales
Family
Arecaceae
Scrophulariaceae
Genus
Archontophoenix
Penstemon
Clade
-
Angiosperms, Asterids, Eudicots
Tribe
Areceae
-
Subfamily
Arecoideae
-
Number of Species
1261
1
27800
👆🏻