Garrya tends to look scruffy in early spring, as older evergreen leaves are shed in favour of new growth. The old leaves may appear scorched, brown or yellowed, particularly at the edges.
The shrub may suffer winter cold damage, especially when sharp weather follows a prolonged mild spell. Although this looks unsightly, causing browning or yellowing of the leaves, it generally poses little threat to the plant. Pruning out the worst of the damage and tidying spent catkins improves the plant's appearance.
Leaf spots in autumn and early winter are often the result of delayed symptoms of stress encountered by the plant the previous summer, such as a period of drought or waterlogging. Remove the worst affected leaves and improve the growing conditions by mulching, watering, feeding or improving drainage as appropriate.
Spotting of leaves in warmer weather may indicate a fungal leaf spot disease. Fungicides that are allowed for use on ornamental plants might be effective, but removal of infected material is often sufficient remedy.
Garrya may occasionally be shy to flower.