Give Epiphyllum anguliger medium light- bright spot away from direct sun. If possible, keep them in a shady spot outdoors in summer.
During spring and summer water plentifully, keeping the potting mixture thoroughly moist . Give plants a brief rest at the end of each flowering period by watering only enough during the next two or three weeks to prevent the potting mixture from drying out. At all other times water moderately, allowing the top centimetre (0.4 inch) or so of the potting mixture dry out completely between waterings.
Epiphyllum anguliger stems do not signal a lack of water by shrivelling as some cacti do. Cuttings of stems left in a dry place have been known to root perfectly well after as long as a year without being potted up.
During the winter months, Epiphyllum Anguliger are kept at a temperature of around 10°C and are watered only seldomly.
After flower buds start to form, apply a tomato-type fertiliser every two weeks. Stop feeding when most buds are open.
Propagate from cuttings taken in spring or summer. Remove a 13 or 15cm (5-6 inch) long branch and allow it to dry for a day before inserting it about 2cm (0.8 inch) deep in a 10cm (4 inch) pot of the potting mixture recommended for mature plants. Several such cuttings are usually planted around the rim of a single pot.
Keep the potting mixture slightly moist until the cuttings root in two to three weeks. After rooting they may be treated as mature plants. They should flower within two years.
Propagation from seed is only really useful when starting to build up a collection of Epiphyllum. When young, Epiphyllum anguliger seedlings are cylindrical and covered with whitish spines. They will not flower until this stage has been passed and the mature flattened stems are produced. When the flattened stems appear, it is thought to be a good idea to take them as cuttings because it is said they will flower earlier than if left on the seedling roots.
Use a potting mixture composed of one part of coarse sand and perlite to three of peat-based mixture. Move the plants into slightly larger pots every spring until they reach the 13 or 15cm (5-6 inch) pot size. Thereafter, simply shake off the old potting mixture from the roots and replace plants in their pots, which have been cleaned. Add fresh potting mixture as necessary. Epiphyllum anguliger which grow taller than 20cm (8 inch) will usually need to be staked unless they are permitted to trail for decorative effect in hanging baskets.
In late Summer/Early autumn make sure its getting a bit of full sun as this will help it to produce the stunning flowers.