Sedums (stonecrops) are drought-tolerant, low-maintenance succulents perfect for green roofs, vertical planting systems, and container displays. Their fleshy leaves store water, making them resilient in harsh conditions. However, for peak performance — especially in a display or show setting — routine care is beneficial.
Light Requirements
Full sun is ideal (6–8 hours daily).
Tolerates partial shade but flowering and colour may reduce.
Watering
General Guidance
-
Water deeply but infrequently. Allow soil/substrate to dry between watering.
-
Avoid overwatering — especially in pots and walls where drainage may be less forgiving.
-
Water early in the day to prevent rot or mildew on foliage.​​
Green Roofs
-
First year: Water twice per week in dry spells to help root establishment.
-
After establishment: Water only in prolonged droughts (7–10 days without rain).
-
Use leaky hose fed from a rain butt or IBC via a small submersible pump.
-
Recommended hose: porous rubber or microporous irrigation tubing.
-
Run system 15–30 mins, 1–2 times per week in dry weather.
-
Use a timer or manual switch. Install filter on pump to avoid sediment blockages.​
Green Walls
-
Require more regular watering due to faster drying and gravity drainage.
-
Use the same leaky hose system, ideally zoned in tiers.
-
Water 2–3 times per week in summer, less in winter.
-
Walls should have free-draining substrate and good airflow.​
Pots
-
Water once every 5–7 days during dry periods. Less in cool or humid weather.
-
Check depth moisture by poking a finger 2–3cm into the soil.
-
Ensure terracotta pots have drainage holes and are lifted off ground to prevent waterlogging.
Feeding
-
Sedums thrive in low-nutrient conditions, but an occasional feed improves flowering and colour.
-
Apply a dilute, balanced liquid feed (e.g. 10-10-10 or 6-4-4) once in spring, and once in early summer.
-
Avoid high-nitrogen feeds — these can promote weak, leggy growth.
-
For potted sedums, use a slow-release granular fertiliser in spring or a weak liquid feed monthly during growing season (March–August).
Pruning & Deadheading
After Flowering
-
Remove spent flower stems in late summer or autumn by cutting back to the rosette/base.
-
Use clean, sharp scissors or secateurs.
-
Deadheading helps maintain neatness and prevents unwanted seeding.
​
Annual Tidy (Autumn or Early Spring)
-
Remove any dead or damaged foliage.
-
Trim back leggy growth to encourage dense, compact habit.
-
For green roofs and walls, do a gentle rake or hand-clear to remove debris, moss, or weeds without disturbing the substrate.
Pests & Problems
-
Generally pest-free, but watch for:
-
Slugs/snails in pots or damp walls – use copper tape or manual removal.
-
Rot from poor drainage – amend soil with grit or perlite.
Rainwater/Irrigation notes
-
Rainwater is ideal — low in lime and soft.
-
Use a submersible pump (rated for irrigation) in an IBC or rain butt.
-
Fit a fine mesh filter to intake to avoid clogging drip systems.
-
Include a pressure reducer if needed for consistent flow in porous hoses.
-
A solar-powered pump or timer can make it off-grid and sustainable.
