Cornus sanguinea ยท Shrub
Honey fungus: Improve drainage and avoid planting in soil previously infected with honey fungus.
Phytophthora root rot: Ensure well-drained soil and avoid overwatering to prevent root suffocation.
Horse chestnut scale: Scrape off visible scales in winter and encourage natural predators like ladybirds.
Vine weevil: Check pots for grubs before planting and use biological controls if infested.
Slugs and snails: Use physical barriers like copper tape or beer traps to protect new growth.