Repotting guide

When & how to repot Rosemary-Leaved Rock Rose (Cistus libanotis)

Also called Rosemary-leaved rock rose, Libanotis rock rose.

More about rosemary-leaved rock rose

About Rosemary-Leaved Rock Rose

Cistus libanotis · also called Rosemary-leaved rock rose, Libanotis rock rose · flowering

Cistus libanotis is a compact evergreen shrub native to the southwestern Iberian Peninsula — southern Portugal and south-west Spain — where it grows on dry, sandy coastal heathlands and scrub. It produces abundant small white flowers from late spring to midsummer and thrives in full sun with very free-draining, poor to moderately fertile soil; established plants are highly drought-tolerant and should never be overwatered. The single most important care fact is that it resents hard pruning, so only light shaping immediately after flowering is advised. Cistus is not listed on the ASPCA Toxic and Non-Toxic Plants database; as the genus is not confirmed non-toxic, treat as mildly toxic and keep pets away as a precaution.

Mature size: 60–90 cm tall by 120–150 cm wide (2–3 ft × 4–5 ft).

Watch for — Root rot and stem dieback: The most frequent killer; caused by overwatering or planting in heavy, poorly drained soil. Ensure sharp drainage and do not irrigate established plants except in prolonged summer drought.

How to tell rosemary-leaved rock rose needs repotting

Repotting on a calendar is less reliable than reading the plant. For rosemary-leaved rock rose, 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 rosemary-leaved rock rose

Every 2–3 years, into bone-dry mix. Rosemary-Leaved Rock Rose's growth habit — low, spreading, dome-shaped evergreen shrub with dense, linear, rosemary-like leaves. — sets the pace. Cistus libanotis is a compact evergreen shrub native to the southwestern Iberian Peninsula — southern Portugal and south-west Spain — where it grows on dry, sandy coastal heathlands and scrub. It produces abundant small white flowers from late spring to midsummer and thrives in full sun with very free-draining, poor to moderately fertile soil; established plants are highly drought-tolerant and should never be overwatered. The single most important care fact is that it resents hard pruning, so only light shaping immediately after flowering is advised. Cistus is not listed on the ASPCA Toxic and Non-Toxic Plants database; as the genus is not confirmed non-toxic, treat as mildly toxic and keep pets away as a precaution.

What size pot to step rosemary-leaved rock rose up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Rosemary-Leaved Rock Rose 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 rosemary-leaved rock rose

Spring or summer, while rosemary-leaved rock rose 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 rosemary-leaved rock rose

Repot dry. Do not water rosemary-leaved rock rose 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 well-draining, poor to moderately fertile, sandy or gritty 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 rosemary-leaved rock rose 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 rosemary-leaved rock rose 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 rosemary-leaved rock rose

Rosemary-Leaved Rock Rose wants well-draining, poor to moderately fertile, sandy or gritty. Thrives in sandy, stony, or gritty soils with a pH of 6.0–7.5; avoids heavy, wet or very fertile soils which promote lax, disease-prone growth. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting rosemary-leaved rock rose — frequently asked questions

How often should you repot rosemary-leaved rock rose?

Every 2–3 years, into bone-dry mix for rosemary-leaved rock rose. Repot rosemary-leaved rock rose every 2–3 years into a snug pot of well-draining, poor to moderately fertile, sandy or gritty, 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 rosemary-leaved rock rose need?

When is the best time of year to repot rosemary-leaved rock rose?

Should you water rosemary-leaved rock rose after repotting?

No — not straight away. Repot rosemary-leaved rock rose 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 rosemary-leaved rock rose after repotting?

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