Life Span
Perennial
Perennial
Type
Perennial
Tree
Origin
-
Southern Europe, Mediterranean, Northern Africa
Types
-
Quercus nigra, Quercus laurifolia
Number of Varieties
508
0
40000
👆🏻
Habitat
Cold Regions, Temperate Regions
-
USDA Hardiness Zone
4-87-9
0
99
👆🏻
AHS Heat Zone
8-1
9-7
Sunset Zone
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17
7, 8, 9, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24
Habit
Cushion/Mound-forming
Oval or Rounded
Plant Size
Minimum Height
20.30 cm1,220.00 cm
0
3900
👆🏻
Minimum Width
27.90 cm1,220.00 cm
0
6350
👆🏻
Plant Color
Flower Color
Blue, Lavender
Light Green
Flower Color Modifier
-
Bicolor
Fruit Color
-
Brown, Chocolate, Black
Leaf Color in Spring
Green, Purple
Light Green, Bronze
Leaf Color in Summer
Green, Purple
Gray Green, Dark Green
Leaf Color in Fall
Green, Purple
Gray Green, Dark Green
Leaf Color in Winter
Light Green
Gray Green, Dark Green
Shape
Leaf Shape
Linear
Oblong or Lanceolate
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall
Spring, Summer
Growing Conditions
Sunlight
Partial Sun, Partial shade
Full Sun, Partial Sun
Growth Rate
Medium
Medium
Type of Soil
Clay, Loam, Sand
Loam, Sand
The pH of Soil
Acidic, Neutral, Alkaline
Acidic, Neutral
Soil Drainage
Average
Average
Bloom Time
Early Spring, Spring, Late Spring, Early Summer
Early Spring, Spring
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Drought
Pollution
Where to Plant?
Container, Ground
Ground
How to Plant?
Seedlings
Grafting, Seedlings
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Average Water Needs, Keep ground moist, Water more in summer
Average Water Needs, Do Not over Water, Requires regular watering
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
Acidic, Neutral, Alkaline
Acidic, Neutral
Soil Type
Clay, Loam, Sand
Loam, Sand
Soil Drainage Capacity
Average
Average
Sun Exposure
Partial Sun, Partial shade
Full Sun, Partial Sun
Pruning
Remove damaged leaves, Remove dead branches, Remove dead leaves
Remove damaged leaves, Remove dead branches, Remove dead leaves
Fertilizers
All-Purpose Liquid Fertilizer, as it is a flowering plant, use high phosphorous content fertilizer
fertilize in fall, Nitrogen, Phosphorous, Potassium
Pests and Diseases
Red blotch
Aphids, Moth
Plant Tolerance
Drought
Pollution, Shade areas
Flowers
Showy
Insignificant
Flower Petal Number
Single
-
Fruits
Showy Fruit
✔
✘
✔
✘
Edible Fruit
✔
✘
✔
✘
Fragrance
Fragrant Flower
✔
✘
✔
✘
Fragrant Fruit
✔
✘
✔
✘
Fragrant Leaf
✔
✘
✔
✘
Fragrant Bark/Stem
✔
✘
✔
✘
Showy Foliage
✔
✘
✔
✘
Showy Bark
✔
✘
✔
✘
Foliage Texture
Fine
Fine
Foliage Sheen
Matte
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Butterflies
Birds
Allergy
-
sneezing, Vomiting, Watery eyes
Uses
Aesthetic Uses
Beautification, Showy Purposes
Cottage Garden
Beauty Benefits
-
Good for skin, Skin Problems
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification
Nesting sites for birds, Shadow Tree
Plant Benefits
Medicinal Uses
Black Dyes
Digestive, Skin irritation
Part of Plant Used
-
Bark, Fruits, Wood
Other Uses
-
Charcoal, Used as firewood, Used for its medicinal properties, Wood is used fore making tools
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Feature Plant, Mixed Border, Rock Garden / Wall, Wildflower
Screening / Wind Break, Shade Trees, Street Trees
Botanical Name
Polemonium caeruleum
QUERCUS laurifolia
Common Name
Jacob's Ladder
Darlington Oak, Diamond-leaf Oak, Laurel Oak, Laurel-leaf Oak, Swamp Laurel Oak, Water Oak
In Hindi
Jacob's Ladder
Quercus
In German
Jacob's Ladder
Quercus
In French
Jacob's Ladder
Quercus
In Spanish
Jacob's Ladder
Quercus
In Greek
Jacob's Ladder
Quercus
In Portuguese
Jacob's Ladder
Quercus
In Polish
Jacob's Ladder
Quercus
In Latin
Jacob's Ladder
Quercus
Kingdom
Plantae
Plantae
Phylum
Tracheophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Ericales
Fagales
Family
Polemoniaceae
Fagaceae
Genus
Polemonium
Quercus
Clade
Angiosperms, Asterids, Eudicots
Angiosperms, Eudicots, Rosids
Tribe
-
-
Subfamily
-
-
Number of Species
40450
1
27800
👆🏻