Repotting guide

When & how to repot Mistletoe cactus (Rhipsalis baccifera)

Also called Mistletoe cactus, Spaghetti cactus, Coral cactus, Old man's beard.

More about mistletoe cactus

About Mistletoe cactus

Rhipsalis baccifera · also called Mistletoe cactus, Spaghetti cactus · houseplant

Mistletoe cactus is a trailing epiphytic jungle cactus with thin, branching green stems that cascade from hanging baskets. Unlike desert cacti it wants bright indirect light, slightly humid air, and a chunky mix kept lightly moist, never bone-dry or soggy. The ASPCA lists it as non-toxic to cats, dogs, and horses.

Mature size: Indoors stems typically trail 0.6-1.8 m (up to about 6 ft) over several years; far longer on wild host trees

Watch for — Mushy, yellowing stems and root rot: The most common problem, caused by overwatering or a poorly draining mix that keeps the roots soggy.

How to tell mistletoe cactus needs repotting

Repotting on a calendar is less reliable than reading the plant. For mistletoe cactus, watch for these signs:

Roots growing out of the drainage holes, or the rootball lifting the plant proud of the rim.
Soil that has shrunk away from the pot sides and no longer holds water.
The pot is unstable because the plant has grown top-heavy.
Old, compacted, broken-down mix that stays wet too long — for a succulent that is a rot risk, so refresh it even if the pot size is fine.

For the underlying biology of a pot-bound root system and why it stalls a plant, see our guide to spotting and fixing a root-bound plant.

How often to repot mistletoe cactus

Every 2–3 years, into bone-dry mix. Mistletoe cactus's growth habit — trailing, branching epiphytic cactus with pencil-thin pendant stems — a natural hanging-basket plant — sets the pace. Mistletoe cactus is a trailing epiphytic jungle cactus with thin, branching green stems that cascade from hanging baskets. Unlike desert cacti it wants bright indirect light, slightly humid air, and a chunky mix kept lightly moist, never bone-dry or soggy. The ASPCA lists it as non-toxic to cats, dogs, and horses.

What size pot to step mistletoe cactus up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Mistletoe cactus stores water and rots in a large pot of slow-drying soil. A tight terracotta pot that dries fast is far safer than a generous plastic one. Never up-pot a succulent by several sizes.

Not sure of the exact diameter? Our pot size calculator takes the current pot and root spread and tells you the right next size — it deliberately recommends a single step up, never a big jump.

The best time of year to repot mistletoe cactus

Spring or summer, while mistletoe cactus is in active growth and warm, is best — roots recover fastest then, and the plant is not sitting in cool damp soil. Avoid repotting a succulent in winter dormancy.

Step-by-step: repotting mistletoe cactus

Repot dry. Do not water mistletoe cactus for several days first. Working with dry roots and dry mix dramatically lowers the rot risk for a succulent.
Pick a snug, fast-draining pot. Choose terracotta one size up at most, with a drainage hole. Have gritty free-draining epiphytic or cactus mix ready.
Tip it out and clean the roots. Slide the plant out, crumble off the old soil, and trim any black, mushy or dead roots with clean snips.
Pot into dry mix. Set mistletoe cactus at its original depth in dry gritty mix, firming gently. Do not bury the stem deeper than it was.
Wait a week before watering. Leave it completely dry and out of harsh sun for about 7 days so any damaged roots callus. Only then water lightly.

Aftercare

Keep mistletoe cactus completely dry and out of fierce sun for about a week so any nicked roots callus before they meet moisture; watering a freshly repotted succulent is the classic way to rot it. Then resume the normal lean, dry rhythm. Do not fertilise for about 3 weeks — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for mistletoe cactus

Mistletoe cactus wants free-draining epiphytic or cactus mix. Use an airy, free-draining medium: combine a quality cactus or succulent compost with extra orchid bark and perlite, or add a handful of bark to standard houseplant mix. The roots are fine and shallow and need oxygen, so a slightly acidic, gritty mix in a pot with drainage holes prevents the soggy conditions that cause root rot. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting mistletoe cactus — frequently asked questions

How often should you repot mistletoe cactus?

Every 2–3 years, into bone-dry mix for mistletoe cactus. Repot mistletoe cactus every 2–3 years into a snug pot of free-draining epiphytic or cactus mix, ideally in spring or summer. Let it sit in dry soil and do not water for about a week afterwards so any nicked roots can callus. Over-potting and watering straight away is what rots succulents.

What size pot does mistletoe cactus need?

When is the best time of year to repot mistletoe cactus?

Should you water mistletoe cactus after repotting?

No — not straight away. Repot mistletoe cactus into dry mix and wait about a week before the first watering so any damaged roots callus over. Watering a freshly repotted succulent is the single most common way to rot one.

Should you fertilise mistletoe cactus after repotting?

Not immediately. Wait about 3 weeks after repotting mistletoe cactus. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.