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Phytophthora root rot is a soil based disease that can kill a wide range of plants. It is one of a number of causes of woody plant death . If you have had the disease confirmed follow these initial steps;

1. REMOVE: Remove sick-looking plants that do not appear to have enough strength to continue to grow.
2. CONTAIN: Avoid moving infected soil around the garden. Unwanted soil should be bagged securely and sent to landfill.
3. CLEAN: Prevent spread of the disease to other areas of the garden using good garden hygiene
   Regular cleaning and tidying not only keeps a garden looking neat, but can reduce pests and diseases too. Beneficial jobs include collecting fallen leaves, promptly removing diseased growth and debris, cleaning tools, and weeding. Still, too much tidying can discourage wildlife, so it’s a fine balance. . Tools, shoes and boots can carry disease around the garden. Either clean footwear at the edge of the diseased area, walk away only on dry, hard surfaces or change shoes and carry the footwear away for cleaning. Cleaning shoes/boots with hot, soapy water is usually sufficient for this task. Tools can be cleaned with a disinfectant such as Jeyes Fluid, used according to its labelling.
4. DRAIN: Improve drainage and aeration. Prevent excess water flowing into affected beds. This could be caused by run-off from hard surfaces, a leaking drain, an over-flowing water butt, or a soak-away. Use a fork pushed full depth into the soil to create aeration holes. Rocking the fork backwards and forwards slightly can be helpful. Consider brushing horticultural (unsalted) sand into these holes if they appear large enough, which will keep the holes open to the air for longer. In areas with compacted soil, digging over the area and incorporating organic matter will help to open up the soil. Avoid further compaction by working in dry weather.

You're now ready to put some plants back into the area.

Replanting

• Replant with resistant plants, as listed on our Phytophthora host list and do not plant too deeply (ensure the root collar is exposed)
• Replant into a raised bed or mound to aid good drainage
• Avoid forming a soil ‘bucket’, or sump, when planting. Holes dug into compacted or clay soils and filled with a better draining compost
  Can refer to either home-made garden compost or seed/potting compost: • Garden compost is a soil improver made from decomposed plant waste, usually in a compost bin or heap. It is added to soil to improve its fertility, structure and water-holding capacity. Seed or potting composts are used for growing seedlings or plants in containers - a wide range of commercially produced peat-free composts are available, made from a mix of various ingredients, such as loam, composted bark, coir and sand, although you can mix your own. can cause water to pool at the bottom of the hole. Avoid this effect by forking the sides and base of the hole

Alternative planting schemes

• Rethink the garden scheme if drainage cannot be achieved. Examples of alternative schemes to use include installing a pond or a bog garden
• If the soil surface drains freely, putting the area down to a lawn or growing ornamental grasses are good options

Simple measures can help reduce further plant losses to Phytophthora root rot;

• Avoid overwatering and maintain good plant health. Provide adequate fertiliser for each species and prune at suitable times of year to minimise stress on the plants
• Check that none of the plants have soil or mulch
  Mulch is a layer of material, at least 5cm (2in) thick, applied to the soil surface in late autumn to late winter (Nov-Feb). It is used to provide frost protection, improve plant growth by adding nutrients or increasing organic matter content, reducing water loss from the soil, for decorative purposes and suppressing weeds. Examples include well-rotted garden compost and manure, chipped bark, gravel, grit and slate chippings. piled up around their stems. If necessary expose a small amount of the root collar to the air and to help keep them dry
• Use a dry mulch such as grit or shingle, rather than using a mulch that will hold moisture