Japanese Spirea Plant
Japanese Spirea (Spiraea japonica) is a shrub that grows 2-6 ft tall, hardy in USDA Zones 4-8, prefers well-drained, loamy soil, full sun to part shade, medium moisture, not edible, and not medicinal.
Habit
Shrub
Height
1 to 1.5 m
Growth
Fast
Soil
Well-drained, loamy
Shade
Full sun to part shade
Moisture
Medium
Edible
No
Medicinal
No
Origin
Japan
Climatic Condition
Temperate, Subtropical
Temperature (°)
15°C to 25°C
Humidity (%)
50% to 60%
Potting media
40% Loam, 40% Sand, 20% Compost
Fertilizers
Balanced Fertilizers
Watering
Regular watering
Plant Weight
0.5 to 1.0 kg
Flowering Time
Spring to Summer
Soil Ph level
6.0 to 7.0
Water Ph level
6.0 to 6.5
Soil EC
0.4 to 0.6 mS/cm
Yield Per Plant
2 to 3 kg per plant
NPK ratio
10:10:10
life Span
5 to 7 years
Health Benefits
Ornamental, Air-purifying
Suggested Grow Media or Potting Mix ?
50% peat, 25% compost, 25% sand
Suggested Fertigation/Fertilizers
Fertilize every 2-3 weeks with a balanced fertilizer.
Common Diseases and Remedies
Powdery Mildew, Leaf Spot, Rust, Root Rot, Canker
White, powdery growth on leaves, Dark spots on leaves, Orange or yellow spots on leaves, Yellowing leaves, wilting, Branch dieback, sunken lesions
Neem oil, sulfur, Remove and destroy infected leaves, Remove and destroy infected leaves, Improve soil drainage, avoid overwatering, Prune and dispose of affected branches
Fungicides with myclobutanil, Fungicides with copper ,Fungicides with mancozeb, Fungicides with mefenoxam ,Fungicides with thiophanate-methyl