Giant Redwood Care Guide

These majestic trees, native to the western slopes of the Sierra Nevada Mountains in California, can thrive in the UK with the right care.

Soil Type

  • Drainage: Giant Redwoods require well-draining soil. They do not tolerate waterlogged conditions, which can lead to root rot.
  • pH Level: They prefer a slightly acidic to neutral pH (6.0 to 7.0). However, they are quite adaptable to a range of soil types.
  • Soil Composition: A loamy soil rich in organic matter is ideal. If your soil is heavy clay or very sandy, amend it with compost to improve its structure.


  • Newly Planted Trees: Water newly planted trees regularly to establish a strong root system. This usually means watering deeply once a week, depending on weather conditions.
  • Mature Trees: Once established, Redwoods are relatively drought-tolerant but benefit from occasional deep watering during prolonged dry spells, especially in the warmer months.
  • Potted Trees: Trees in pots require more frequent watering as the soil in pots tends to dry out faster. Ensure the pot has adequate drainage to prevent waterlogging.

Seasonal Care


  • Mulching: Apply a layer of organic mulch around the base of the tree to retain moisture and regulate soil temperature.
  • Fertilising: Use a balanced, slow-release fertiliser to provide nutrients for growth.


  • Watering: Monitor soil moisture levels and water deeply during prolonged dry periods.
  • Pruning: Minimal pruning is required. If necessary, prune to shape or remove dead branches.


  • Prepare for Winter: Reduce watering as the tree’s growth slows down. This helps harden off the new growth before the onset of winter.
  • Mulching: Refresh the mulch layer to protect the roots from freezing temperatures.


  • Protection: In the UK, mature Redwoods are generally hardy. However, young trees may need protection from severe frosts. Covering the base with burlap can help.
  • Watering: Water sparingly, only if the soil is dry and frost-free.

Additional Tips

  • Spacing: If planting in the ground, ensure ample space for growth. Redwoods can grow very large.
  • Potted Trees: Repot every few years to provide fresh soil and more room for growth. Use a large, sturdy pot to accommodate the tree’s size.
  • Monitoring: Regularly check for signs of pests or diseases, though Redwoods are generally resilient.