Life Span
Perennial
Perennial
Type
Perennial
Fruit
Origin
-
Western Europe
Types
-
Pyrus amygdaliformis, Pyrus armeniacifolia, Pyrus bourgaeana
Number of Varieties
5025
0
40000
👆🏻
Habitat
Cold Regions, Temperate Regions
Dappled Shade, Sunny Edge, Woodland Garden Secondary
USDA Hardiness Zone
4-85-9
0
99
👆🏻
AHS Heat Zone
8-1
9-5
Sunset Zone
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17
2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18
Habit
Cushion/Mound-forming
Oval or Rounded
Plant Size
Minimum Height
20.30 cm101.60 cm
0
3900
👆🏻
Minimum Width
27.90 cm38.10 cm
0
6350
👆🏻
Plant Color
Flower Color
Blue, Lavender
-
Flower Color Modifier
-
Bicolor
Fruit Color
-
-
Leaf Color in Spring
Green, Purple
-
Leaf Color in Summer
Green, Purple
-
Leaf Color in Fall
Green, Purple
-
Leaf Color in Winter
Light Green
Light Green
Shape
Leaf Shape
Linear
Oblong
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall
Spring, Fall
Growing Conditions
Sunlight
Partial Sun, Partial shade
Full Sun, Partial Sun
Growth Rate
Medium
Slow
Type of Soil
Clay, Loam, Sand
Loam
The pH of Soil
Acidic, Neutral, Alkaline
Acidic, Neutral
Soil Drainage
Average
Well drained
Bloom Time
Early Spring, Spring, Late Spring, Early Summer
Spring
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
Medium
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
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 crossing or rubbing branches, Remove damaged leaves, Remove dead branches, Remove dead leaves, Remove dead or diseased plant parts
Fertilizers
All-Purpose Liquid Fertilizer, as it is a flowering plant, use high phosphorous content fertilizer
All-Purpose Liquid Fertilizer
Pests and Diseases
Red blotch
Red blotch
Plant Tolerance
Drought
Drought
Flowers
✔
✘
✔
✘
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
-
Foliage Sheen
Matte
-
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Butterflies
Birds
Allergy
-
Itchiness, Mouth itching, Pollen, Sore Throat
Uses
Aesthetic Uses
Beautification, Showy Purposes
-
Beauty Benefits
-
Good for skin and hair
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification
Air purification, Nesting sites for birds, Shadow Tree, Windbreak
Plant Benefits
Medicinal Uses
Black Dyes
Analgesic, Diuretic, Heart problems, High cholestrol, Stomach pain, Weight loss
Part of Plant Used
-
Fruits, Wood
Other Uses
-
Used as a dye, Used for woodware
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Feature Plant, Mixed Border, Rock Garden / Wall, Wildflower
Feature Plant, Fruit / Fruit Tree
Botanical Name
Polemonium caeruleum
PYRUS 'Bosc'
Common Name
Jacob's Ladder
Bosc Pear, Pear
In Hindi
Jacob's Ladder
Bosc Pear Tree
In German
Jacob's Ladder
Bosc Pear Tree
In French
Jacob's Ladder
Bosc Pear Tree
In Spanish
Jacob's Ladder
Bosc Pear Tree
In Greek
Jacob's Ladder
Bosc Pear Tree
In Portuguese
Jacob's Ladder
Bosc Pear Tree
In Polish
Jacob's Ladder
Bosc Pear Tree
In Latin
Jacob's Ladder
Orbis Bosc ligno
Kingdom
Plantae
Plantae
Phylum
Tracheophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Ericales
Rosales
Family
Polemoniaceae
Rosaceae
Genus
Polemonium
Pyrus
Clade
Angiosperms, Asterids, Eudicots
Angiosperms, Eudicots, Rosids
Tribe
-
Maleae
Subfamily
-
Amygdaloideae
Number of Species
4024
1
27800
👆🏻