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PlantSnap
Plant Care
Tall bluebell
(Wahlenbergia stricta)
Also Known As
Tall bluebell, Australian bluebell, Wallum bluebell
About This Plant
Wahlenbergia stricta is a herbaceous perennial plant species that belongs to the family Campanulaceae. It is native to South Africa and is commonly known as the Bluebell of South Africa.
Plant Care Instructions
Outdoor Size Range
12-16 inches (30-40 cm)
Light Requirements
Wahlenbergia stricta prefers full sunlight to partial shade. It needs at least 6 hours of direct sunlight per day to grow properly.
Humidity Needs
Wahlenbergia stricta prefers moderate humidity levels. It can tolerate dry air, but it grows better in humid conditions.
Fertilizing Schedule
The plant requires regular fertilization during the growing season. A balanced fertilizer with equal parts nitrogen, phosphorus, and potassium should be used every 2-3 weeks.
Pruning Guidelines
The plant requires regular pruning to maintain its shape and promote healthy growth. Dead or damaged leaves and stems should be removed regularly.
Common Pests and Diseases
Wahlenbergia stricta is susceptible to aphids, spider mites, and whiteflies. Regular inspection and treatment with insecticidal soap or neem oil can help prevent infestations.
Indoor Size Range
10-12 inches (25-30 cm)
Watering Schedule
The plant requires moderate watering. It should be watered once a week and the soil should be kept moist but not waterlogged.
Temperature Range
The plant prefers moderate temperatures between 60-75°F (15-24°C). It can tolerate higher temperatures, but it may require more watering.
Growing Season
The growing season for Wahlenbergia stricta is from late spring to early fall.
Growing Difficulty Level
Wahlenbergia stricta is moderately difficult to grow. It requires consistent watering and fertilization, and it is susceptible to pests and diseases.
USDA Hardiness Zones
Wahlenbergia stricta is hardy in USDA zones 8-11.
Did You Know?
The blue flowers of Wahlenbergia stricta are said to resemble the Scottish thistle, which is why the plant is sometimes called the 'Cape Thistle'.
