Repotting guide

When & how to repot Pink Mountain Heath (Phyllodoce empetriformis)

Also called Pink Mountain Heath, Pink Mountain Heather, Red Mountain-heather.

More about pink mountain heath

About Pink Mountain Heath

Phyllodoce empetriformis · also called Pink Mountain Heath, Pink Mountain Heather · flowering

Phyllodoce empetriformis is a low mat-forming evergreen subshrub native to alpine and subalpine zones of western North America, from the Sierra Nevada to Alaska, bearing clusters of nodding, rose-pink to rosy-purple urn-shaped flowers in early summer. It grows naturally on moist, cool slopes above 1,500 m and requires acidic, humus-rich, consistently moist soil with good drainage and cool summer temperatures. The most critical care fact is that it must not be allowed to dry out, particularly when in flower. Toxicity to pets has not been confirmed by ASPCA; as an Ericaceae member, treat with caution.

Mature size: 10–30 cm tall and up to 50 cm wide.

How to tell pink mountain heath needs repotting

Repotting on a calendar is less reliable than reading the plant. For pink mountain heath, 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 pink mountain heath

Every 2–3 years, into bone-dry mix. Pink Mountain Heath's growth habit — low mat-forming evergreen subshrub with needle-like, crowded leaves resembling crowberry (empetrum), hence the species name. — sets the pace. Phyllodoce empetriformis is a low mat-forming evergreen subshrub native to alpine and subalpine zones of western North America, from the Sierra Nevada to Alaska, bearing clusters of nodding, rose-pink to rosy-purple urn-shaped flowers in early summer. It grows naturally on moist, cool slopes above 1,500 m and requires acidic, humus-rich, consistently moist soil with good drainage and cool summer temperatures. The most critical care fact is that it must not be allowed to dry out, particularly when in flower. Toxicity to pets has not been confirmed by ASPCA; as an Ericaceae member, treat with caution.

What size pot to step pink mountain heath up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Pink Mountain Heath 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 pink mountain heath

Spring or summer, while pink mountain heath 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 pink mountain heath

Repot dry. Do not water pink mountain heath 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 moist, acidic (ph 4.5–5.5), peaty and well-drained 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 pink mountain heath 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 pink mountain heath 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 pink mountain heath

Pink Mountain Heath wants moist, acidic (ph 4.5–5.5), peaty and well-drained. Sandy or gritty peaty soils with good drainage are ideal; incorporate composted pine bark or ericaceous compost at planting — heavy clay must be avoided as it causes root death in wet winters. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting pink mountain heath — frequently asked questions

How often should you repot pink mountain heath?

Every 2–3 years, into bone-dry mix for pink mountain heath. Repot pink mountain heath every 2–3 years into a snug pot of moist, acidic (ph 4.5–5.5), peaty and well-drained, 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 pink mountain heath need?

When is the best time of year to repot pink mountain heath?

Should you water pink mountain heath after repotting?

No — not straight away. Repot pink mountain heath 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 pink mountain heath after repotting?

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