What's eating my broadleaf stonecrop?

Broadleaf Stonecrop (Sedum spathulifolium) grown as a houseplant or alpine garden plant faces mealybugs as the main indoor pest, while outdoor plants are targeted by vine weevil larvae at the roots and aphids at new growth. Slugs can damage outdoor plants in wet conditions. Identify your growing situation to target the right threat.

White waxy wool in leaf rosette centres and stem joints; yellowing leaves; honeydew residue Swab with isopropyl alcohol; apply neem oil spray every 10 days; keep plant in good airflow and avoid overwatering

Sudden collapse of rosettes; roots severed at soil level; C-shaped grubs found in the soil around the roots Apply biological control nematodes (Steinernema kraussei) to moist soil in late summer or early autumn; remove grubs by hand when repotting

Soft green or grey insects on new growth and stem tips; curled or distorted new leaves; sticky honeydew Blast off with a jet of water; treat with insecticidal soap spray; encourage natural predators such as lacewings and ladybirds