Epiphyllum oxypetalum
Epiphyllum oxypetalum · Cactaceae
📷 Fischer.H · CC BY-SA 4.0
The gardener's calendar
In autumn, ease off feeding and take the chance to clean up around epiphyllum oxypetalum and prepare for winter.
ID card
- Common name
- Passion Cereus, Sharp-sepaled Night-blooming Cereus
- Foliage
- Evergreen, flattened and succulent leaves
- Flowering
- Summer (June-July), highly fragrant white nocturnal flowers
- Adult size
- 30 to 60 cm tall, trailing habit
- Growth
- Moderate to fast
- Hardiness
- Tender (min. 50°F/10°C)
- Origin
- Mexico, epiphytic habitat (tree-dwelling)
- Soil type
- Cactus potting mix, very well-draining
Expert tips
The key tip
Arrose régulièrement du printemps à l'automne, maintiens le substrat légèrement humide (pas gorgé) et laisse-le sécher entre les arrosages ; en hiver, réduis drastiquement l'eau. Le piège : les Epiphyllum demandent bien plus d'eau qu'un cactus classique, et craignent la dessication prolongée. Apporte un engrais équilibré une fois par mois pendant la saison de croissance.
The common mistake
La plupart des jardiniers le traitent comme un vrai cactus et le laissent sans eau pendant des semaines : il meurt lentement, les tiges deviennent molles et ne refleurissent jamais. Ce n'est pas un cactus de désert, c'est un épiphyte d'épais troncs forestiers, il a besoin d'humidité constante.
The pro's trick
Pour forcer la floraison spectaculaire, impose une période sèche de 4 à 6 semaines en hiver (octobre-novembre) : réduis l'eau au minimum, pas d'engrais. Dès décembre, reprends les arrosages normaux et tu verras les bourgeons se former massivement avant la floraison nocturne de mai-juin.
Seasonal watch
L'hiver, surveille l'excès d'humidité : l'air froid + un sol trop mouillé = fonte racinaire rapide. Aère bien, arrose que si le substrat est presque sec. Et en été, si tu oublies l'eau pendant une vague de chaleur, les tiges ratatinent irrémédiablement et ne récupèrent jamais leur turgescence.
Care
Watering
Water moderately during spring and summer growth, allowing the substrate to dry slightly between waterings. Drastically reduce watering in fall and winter. Prefer non-chalky water at room temperature. Avoid waterlogging at all costs, as it causes root rot.
Light
Place it in bright light, but away from scorching direct sun. An east or west-facing windowsill suits it perfectly. Outdoors during summer, it appreciates dappled shade. The less light it receives, the fewer flowers it will produce.
Pruning and pinching
Pinch the stem tips in spring to encourage branching and a fuller shape. Flowers appear at the stem tips, so light pruning before flowering stimulates blooms. Remove any dead or damaged parts without hesitation.
Fertilizer
Feed with balanced or phosphorus-rich fertilizer every two weeks or so from April to August. Stop feeding completely from September to March to respect the winter rest period, which promotes flowering. Excess nitrogen encourages foliage at the expense of flowers.
Soil and repotting
Use a very well-draining mix: cactus potting soil + perlite (3:1). Repot in spring if needed, every 2-3 years, in a pot only slightly larger. Ensure the pot has drainage holes. Epiphyllum prefers to be slightly root-bound, which also encourages blooming.
Pests and problems
Watch for mealybugs and spider mites, especially indoors. If infested, isolate the plant and spray with soapy water. Crown rot is the main risk and always results from overwatering. Flowers dropping before opening indicate water stress or insufficient light.
Did you know?
Epiphyllum oxypetalum has fascinated gardeners for centuries with its spectacular yet brief blooming: its magnificent white flowers open only at night and close at sunrise. In Japan, this plant is tied to a poetic proverb about fleeting beauty, and its cultivation has become a refined art form there. In ancient Central America, this plant was considered a magical event worthy of family celebration when buds formed.
Where to buy it
Plant in spring, once all risk of frost has gone. Pick a plant with healthy foliage and roots that are not exposed. Best time: from April to June.
Add this plant to my garden →Plants from the same family
- SaguaroCarnegiea gigantea
- Erect prickly pearOpuntia stricta
- Hedgehog pearOpuntia polyacantha
- Tree chollaCylindropuntia imbricata
- Opuntia basilarisOpuntia basilaris
- Ferocactus wislizeniFerocactus wislizeni
Tips generated and checked by Viridia — adapt them to your local climate.