Repotting guide

When & how to repot Spike heath (Bruckenthalia spiculifolia)

Also called Spike heath, Spiked heath, Balkan heath.

More about spike heath

About Spike heath

Bruckenthalia spiculifolia · also called Spike heath, Spiked heath · flowering

Spike heath is a compact, mat-forming evergreen shrub from the mountains of southeastern Europe and Turkey, closely allied to Erica. It produces dense spikes of tiny rose-pink bell-shaped flowers in early summer above needle-like foliage. Excellent ground cover for acidic, well-drained rock gardens and heathland plantings. No known toxicity to pets.

Mature size: 15–30 cm tall (6–12 in), spreading 30–60 cm (12–24 in)

Watch for — Root rot from poor drainage: The most common cause of plant loss. Waterlogged or clay soils in winter kill roots rapidly. Always plant on a slope, in a raised bed, or in gritty, free-draining mix. Improve existing beds with coarse grit or pea gravel before planting.

How to tell spike heath needs repotting

Repotting on a calendar is less reliable than reading the plant. For spike 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 spike heath

Every 2–3 years, into bone-dry mix. Spike heath's growth habit — low, mat-forming evergreen sub-shrub; dense and spreading — sets the pace. Spike heath is a compact, mat-forming evergreen shrub from the mountains of southeastern Europe and Turkey, closely allied to Erica. It produces dense spikes of tiny rose-pink bell-shaped flowers in early summer above needle-like foliage. Excellent ground cover for acidic, well-drained rock gardens and heathland plantings. No known toxicity to pets.

What size pot to step spike heath up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Spike 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 spike heath

Spring or summer, while spike 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 spike heath

Repot dry. Do not water spike 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 acidic, sharply drained, lean; sandy loam or gritty mix; ph 4.5–6.0 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 spike 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 spike 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 spike heath

Spike heath wants acidic, sharply drained, lean; sandy loam or gritty mix; ph 4.5–6.0. Demands excellent drainage — standing moisture causes rapid root rot. Rock garden mixes of 50% coarse grit and 50% acidic loam or pine bark replicate its rocky mountain habitat. Intolerant of heavy clay or fertile, nitrogen-rich soils, which promote lush growth at the expense of flowers. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting spike heath — frequently asked questions

How often should you repot spike heath?

Every 2–3 years, into bone-dry mix for spike heath. Repot spike heath every 2–3 years into a snug pot of acidic, sharply drained, lean; sandy loam or gritty mix; ph 4.5–6.0, 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 spike heath need?

When is the best time of year to repot spike heath?

Should you water spike heath after repotting?

No — not straight away. Repot spike 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 spike heath after repotting?

Not immediately. Wait about 3 weeks after repotting spike 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.