Life Span
Perennial
Perennial
Type
Perennial
Tree
Origin
-
Eastern Asia
Types
-
Ulmus parvifolia 'Emer II', Ulmus parvifolia 'True Green'
Number of Varieties
504
0
40000
👆🏻
Habitat
Cold Regions, Temperate Regions
Woodland Garden Canopy
USDA Hardiness Zone
4-85-9
0
99
👆🏻
AHS Heat Zone
8-1
9-1
Sunset Zone
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17
3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Habit
Cushion/Mound-forming
Upright/Erect
Plant Size
Minimum Height
20.30 cm460.00 cm
0
3900
👆🏻
Minimum Width
27.90 cm300.00 cm
0
6350
👆🏻
Plant Color
Flower Color
Blue, Lavender
Red
Flower Color Modifier
-
Bicolor
Fruit Color
-
Tan, Brown
Leaf Color in Spring
Green, Purple
Green
Leaf Color in Summer
Green, Purple
Dark Green
Leaf Color in Fall
Green, Purple
Yellow, Red, Green
Leaf Color in Winter
Light Green
-
Shape
Leaf Shape
Linear
Elliptic, toothed
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall
Spring, Summer, Fall, Winter
Growing Conditions
Sunlight
Partial Sun, Partial shade
Full Sun, Partial Sun
Growth Rate
Medium
-
Type of Soil
Clay, Loam, Sand
Loam, Sand
The pH of Soil
Acidic, Neutral, Alkaline
Acidic, Neutral, Alkaline
Soil Drainage
Average
Well drained
Bloom Time
Early Spring, Spring, Late Spring, Early Summer
Fall
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Drought
Drought
Where to Plant?
Container, Ground
Ground
How to Plant?
Seedlings
Seedlings
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Average Water Needs, Keep ground moist, Water more in summer
Average Water Needs
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, Alkaline
Soil Type
Clay, Loam, Sand
Loam, Sand
Soil Drainage Capacity
Average
Well drained
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
6-12-12 or 5-10-10
Pests and Diseases
Red blotch
Canker, Leaf spot, Rots, Wilts
Plant Tolerance
Drought
Drought
Flowers
Showy
Insignificant
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
Fine
Fine
Foliage Sheen
Matte
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Butterflies
Birds
Allergy
-
Moderate Allergen
Uses
Aesthetic Uses
Beautification, Showy Purposes
Bonsai, Showy Purposes
Beauty Benefits
-
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification
Air purification
Plant Benefits
Medicinal Uses
Black Dyes
Antidote, Demulcent, Diuretic, Expectorant, Febrifuge, Hypnotic
Part of Plant Used
-
Fruits, Inner Bark, Leaves
Other Uses
-
Can be grown in a shelter belt, Used as a thickener in soups
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Feature Plant, Mixed Border, Rock Garden / Wall, Wildflower
Container, Feature Plant, Mixed Border, Shade Trees, Street Trees, Topiary / Bonsai / Espalier
Botanical Name
Polemonium caeruleum
ULMUS parvifolia
Common Name
Jacob's Ladder
Chinese Elm, Lacebark Elm
In Hindi
Jacob's Ladder
Lacebark Elm
In German
Jacob's Ladder
Lacebark Elm
In French
Jacob's Ladder
Lacebark Elm
In Spanish
Jacob's Ladder
Lacebark Elm
In Greek
Jacob's Ladder
Lacebark Elm
In Portuguese
Jacob's Ladder
Lacebark Elm
In Polish
Jacob's Ladder
Lacebark Elm
In Latin
Jacob's Ladder
Lacebark Elm
Kingdom
Plantae
Plantae
Phylum
Tracheophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Ericales
Urticales
Family
Polemoniaceae
Ulmaceae
Genus
Polemonium
Ulmus
Clade
Angiosperms, Asterids, Eudicots
Angiosperms, Eudicots, Rosids
Tribe
-
Ulmeae
Subfamily
-
-
Number of Species
4010
1
27800
👆🏻