Try to get the garden neat and tidy before going on holiday

Collect Aquilegia seed

Make sure container plants do not want for moisture. 

Sow a  green manure crop

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Trim formal hedges such as privet and  honeysuckle.

Ensure fish have some shade from hot sun.

Pot up Cistus Hippeastrum Hyacinth

Clean watering can roses and sprayer heads that have become badly 'furred / scaled' with calcium deposits

Renovate lawn if necessary