Summer at last! Check patio furniture for wear and tear. Replace if necessary, why have shabby furniture in a beautiful garden?
Weeding will be easier now you have been hoeing on a weekly basis!

Water plants in patio planters regularly and don’t forget to feed with miracle grow as a rule of thumb, once every third watering. Feeding is better little and often rather than one big feed, which can do more harm than good.
Mow lawns weekly, they will look better for it. Feed once a month with evergreen lawn care.
Stake tall or floppy plants.

Keep checking all plants for pest and diseases.

Spray greenhouses with shading to prevent scorching.
Remember the point of what you are doing in your garden, its about enjoyment and a sense of well being, so, don’t forget to look back at what you have achieved, this is best done from a comfy seat with a glass of your favorite tipple.