We have had such a reduction in rainfall, only day after day of
rain will begin to compensate.
The danger of light showers and that general damp feeling
associated with it, is that watering is reduced. Small
quantities of rain will not even begin to penetrate the ground.
Other than water what can you do?
Mulch with composted woodchips, 2" deep, keeping the area
around the trunk clear (otherwise the tree will think the ground
level has changed). Mulch as wide as you can. This retains
moisture, suppresses weed growth and increases Mycorrhizal activity
(x15 over grass).
Before you mulch, remove weeds and lightly fork /scratch the
soil, to increase percolation.
Mycorrhizal fungi, which synbiotically extends the root system.
You can buy UK Mycorrhizal fungi branded as RootGrow. Soak around
the root system, then push a cane/fork into the soil, remove and
place the fungi into the holes and backfill. Always use with new
planting.
If any epicormic / basal growth (new shoots on the trunk or base
of trunks / shoots from the base) occurs, remove reguarly as this
diverts energy from the canopy (and is a very good indicator of
stress.
Most importantly HAVE EMPATHY. If you feel the need for a
cool drink, there is a very good chance the trees will need
watering. Follow on Twitter @yourtalkingtree for
aftercare hints from a tree.