Life Span
Perennial
Perennial
Origin
Central Asia, India, Nepal
Hybrid origin, Eastern Asia, India, Nepal, China
Types
White oak, Bluff oak, Muller oak
Victoria Rhubarb
Colorado Red Rhubarb
Turkish Rhubarb
Habitat
Clay soil areas, Dry areas, Sandy areas
gardens, Grassland, Humid climates, Tropical regions, Urban areas
USDA Hardiness Zone
6-9
3-7
Sunset Zone
H1, 7, 8, 9, 14, 15, 16, 17, 20, 21, 22, 23, 24
2a, 2b, 3a, 3b, 4, 5, 6, 7, 14, 15, 16, 17
Habit
Oval or Rounded
Clump-Forming
Flower Color
Red, Yellow green
Ivory
Flower Color Modifier
Bicolor
Not Available
Fruit Color
Sandy Brown, Sienna
Not Available
Leaf Color in Spring
Green, Light Green, Gray
Green
Leaf Color in Summer
Green, Gray
Green
Leaf Color in Fall
Green, Dark Green, Gray
Green
Leaf Color in Winter
Dark Green, Gray
Light Green
Leaf Shape
broad, flat
Compound
Plant Season
Spring, Summer, Fall, Winter
Summer
Sunlight
Full Sun, Partial Sun
Full Sun, Partial Sun
Type of Soil
Loam
Clay, Loam
The pH of Soil
Acidic
Acidic, Neutral
Soil Drainage
Average
Well drained
Bloom Time
Spring
Summer, Late Summer
Tolerances
Drought
Drought
Where to Plant?
Ground
Ground
How to Plant?
Seedlings, Transplanting
Stem Planting
Plant Maintenance
Medium
Medium
Watering Requirements
Average Water Needs
Do Not over Water, Requires regular watering, Use Mulches to help prevent water loss during hot and windy weather, Water Deeply
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil pH
Acidic
Acidic, Neutral
Soil Type
Loam
Clay, Loam
Soil Drainage Capacity
Average
Well drained
Sun Exposure
Full Sun, Partial Sun
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
All-Purpose Liquid Fertilizer
Pests and Diseases
Red blotch
Red blotch
Plant Tolerance
Drought
Drought
Flower Petal Number
Not Available
Not Available
Foliage Texture
Medium
Bold
Foliage Sheen
Glossy
Matte
Attracts
Birds
Not Available
Allergy
Pollen
Skin irritation
Aesthetic Uses
Showy Purposes
Not Used For Aesthetic Purpose
Beauty Benefits
Not Available
Not Available
Environmental Uses
Air purification, Nesting sites for birds, Shadow Tree, Shelter for wildlife, Wildlife
Air purification
Medicinal Uses
Chronic fatigue, Cramps, Diarrhea, Dysentry, gallstones, Haemorrhages, Menstrual Cramps
Not Available
Part of Plant Used
Leaves, Seeds, Wood
Whole plant
Other Uses
Used as firewood, used for making charcoal
Culinary use, Used as Ornamental plant
Used As Indoor Plant
No
No
Used As Outdoor Plant
Yes
Yes
Garden Design
Feature Plant, Shade Trees
Edible, Herb / Vegetable, Mixed Border
Botanical Name
QUERCUS leucotrichophora
RHEUM x hybridum
Common Name
Banj Oak, Blackjack Oak, Himalayan Oak
Hybrid Garden Rhubarb, Rhubarb
In Hindi
Blackjack Oak Tree
एक प्रकार का फल
In German
Blackjack Oak Tree
Rhabarber
In French
Blackjack Oak Tree
Rhubarbe
In Spanish
Blackjack Oak Tree
Ruibarbo
In Greek
Blackjack Oak Tree
Ραβέντι
In Portuguese
Blackjack Carvalho
Ruibarbo
In Polish
Blackjack Oak Tree
Rabarbar
In Latin
Blackjack quercum ligno
RHEUM
Phylum
Magnoliophyta
Tracheophyta
Class
Magnoliopsida
Not Available
Order
Fagales
Caryophyllales
Family
Fagaceae
Polygonaceae
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Core eudicots, Eudicots
Tribe
Not Available
Not Available
Subfamily
Not Available
Not Available
Number of Species
Not Available
Season and Care of Blackjack Oak and Rhubarb
Season and care of Blackjack Oak and Rhubarb is important to know. While considering everything about Blackjack Oak and Rhubarb Care, growing season is an essential factor. Blackjack Oak season is Spring, Summer, Fall and Winter and Rhubarb season is Spring, Summer, Fall and Winter. The type of soil for Blackjack Oak is Loam and for Rhubarb is Clay, Loam while the PH of soil for Blackjack Oak is Acidic and for Rhubarb is Acidic, Neutral.
Blackjack Oak and Rhubarb Physical Information
Blackjack Oak and Rhubarb physical information is very important for comparison. Blackjack Oak height is 2,286.00 cm and width 1,219.20 cm whereas Rhubarb height is 60.00 cm and width 120.00 cm. The color specification of Blackjack Oak and Rhubarb are as follows:
Blackjack Oak flower color: Red and Yellow green
Blackjack Oak leaf color: Green, Light Green and Gray
Rhubarb flower color: Ivory
- Rhubarb leaf color: Green
Care of Blackjack Oak and Rhubarb
Care of Blackjack Oak and Rhubarb include pruning, fertilizers, watering etc. Blackjack Oak pruning is done Remove damaged leaves, Remove dead branches and Remove dead leaves and Rhubarb pruning is done Remove damaged leaves, Remove dead branches and Remove dead leaves. In summer Blackjack Oak needs Lots of watering and in winter, it needs Average Water. Whereas, in summer Rhubarb needs Lots of watering and in winter, it needs Average Water.