Roof top gardens in Kensington for wow factor.
Chelsea Physic Garden for beauty and education.
The Queens Circle at Regents Park for flowers.
The Princess Diana Memorial playground and fountain in Kensington Gardens for kids.
The Soho community garden for wild space among the buildings.
Kew gardens for the hothouses (check, they may be under renovation)
Richmond park for deer
Towpaths along the canals for a walk or bike ride in a quiet green space
Primrose hill in winter if it snows.