Light
Bright Indirect Light
Requires bright indirect light or filtered sun; avoid harsh midday sun.
Reference image Harrisia eriophora
Fragrant Applecactus
Overview
Harrisia eriophora, commonly known as the fragrant applecactus, is a striking night-blooming columnar cactus belonging to the family Cactaceae. Highly prized for its nocturnal, large, white, and aromatic flowers, it makes a dramatic statement in succulent collections and arid landscapes.
Taxonomy and Naming
The species belongs to the genus Harrisia 1. The specific epithet eriophora derives from Greek, meaning 'wool-bearing', referring to the characteristic woolly scales found on the flower buds and floral tubes. It was historically described under the synonym Cereus eriophorus.
Distribution and Habitat
Native to Cuba (CUB, CUB_OO) and parts of the Caribbean, this species thrives in seasonally dry tropical biomes 2. It is typically found in coastal thickets, dry shrublands, and limestone hillsides, where it adapts well to rocky, nutrient-poor substrates.
Appearance
Harrisia eriophora is a succulent subshrub that displays a semi-erect or sprawling habit, growing up to 3-5 meters tall. The cylindrical green stems feature 8 to 11 deep ribs lined with greyish areoles and sharp spines. The nocturnal flowers are massive, measuring 15-20 cm in length, with a woolly exterior tube and pure white inner petals. It produces globose, edible yellow fruits when pollinated.
Cultivation and Care
This cactus prefers a fast-draining, mineral-rich gritty soil with some limestone components. During the active growing season, it benefits from bright, filtered sunlight and deep but infrequent watering. It requires warm temperatures and must be protected from freezing conditions.
Common Cultivation Errors
The most frequent mistake is overwatering during the winter dormancy, which easily triggers root rot. Additionally, keeping the plant in deep shade results in weak, spindly stem growth (etiolation) and prevents the development of its spectacular blooms.
Bibliography
References
Watering
10-25 Days
Water thoroughly only when the soil is dry. Keep almost dry in winter.
Soil
Fast-draining, sandy and pumice-rich cactus soil mix
Requires a highly porous, gritty cactus soil mix with excellent drainage.
Safety
Pet Friendly
Features sharp spines along the stems. Non-toxic to pets, but handle with care.
Difficulty
Easy
Very easy to care for, provided it is not overwatered and is kept warm.
Native Habitat
Cuba, Caribbean
Originates from the dry tropical forests, rocky limestone outcrops, and coastal shrublands of Cuba and adjacent Caribbean areas.
Frequently Asked Questions
Can Harrisia eriophora be grown indoors?
Yes, it can be grown successfully indoors if placed near a very sunny window or under bright, indirect light.
How often should this cactus be watered?
Water about every 10 days in summer once the soil dries out completely, and reduce to once a month or less in winter.
When does Harrisia eriophora bloom?
It typically blooms during the summer nights. The massive white flowers open for just one night and emit a strong fragrance.
What kind of soil does it prefer?
It prefers a fast-draining gritty mix, rich in pumice, coarse sand, and perlite designed for cacti.
Is it toxic to pets?
No, it is non-toxic, but the sharp spines on its stems can cause physical injury to curious pets.
What is its growth rate?
Under optimal warmth and light, it has a moderate to fast growth rate, growing taller quicker than many other cacti.
What temperature does it need in winter?
It is best kept above 10°C (50°F) in winter. It is highly sensitive to frost and freezing temperatures.
Are the fruits edible?
Yes, the mature yellow fruits are edible and have a sweet taste, often consumed in its native habitat.
How do I encourage it to bloom?
Ensure it gets ample sunlight during spring and summer, and allow it to experience a dry, cool rest period in winter.
When should it be repotted?
Repot every 2-3 years in early spring, moving to a slightly larger pot, while being careful with the root system.