Norway Maple Tree | Acer platanoides 'Crimson Sentry'

Although acers have relatively few problems, you may still experience the odd issue or two with pests or disease. From the pest perspective, aphids can be a nuisance, though these are easily removed using a soapy water spray. In terms of disease, 'Crimson Sentry' can experience leaf scorch or Verticillium wilt.

This tree will benefit from regular watering (a weekly deep soak) during its first 12-24 months to help it establish, and particularly in drier spells. Once established, it will primarily only need watering in hotter weather. Signs your tree needs watering include drooping and wilting leaves.

Purple-leaved acer varieties like this one like sun (at least 6 hours or so every day) in cooler climates to help develop the best colour. When planted in hotter climates, though, the tree will appreciate some afternoon shade to protect it from scorching sunlight (somewhere that it receives morning sun and afternoon shade can be ideal).

Acers are tolerant of most soil conditions provided that there's good drainage. Consider amending your soil with some well-rotted manure or other organic matter just to improve its fertility.

A once-yearly feed with all-purpose fertiliser (applied in February) can help give the tree a little extra growing boost, though it's by no means a must-do.