Silverleaf hydrangea is suitable for hardiness zones 4 to 9, although highly protected locations would be advisable in areas warmer than zone 6.
The gardens contain extensive hydrangea plantings, as well as a five acre (20,234 m) lake with walking trails.
Flat white flower-heads (cymes) resembling those of lacecap hydrangeas are borne in early summer.
Hydrangeas are moderately toxic if eaten, with all parts of the plant containing cyanogenic glycosides.
The gardens have over seven thousand varieties of plants, particularly those that grow well in an acid soil, including camelias, magnolias, rhododendrons and hydrangeas.
There is exotic vegetation: roses, hydrangeas, palms, and exotic ferns mixed with the existing vegetation of the park.
Climbing hydrangea is grown either on masonry walls or on sturdy trellises or fences.
Hydrangeas are another potential pest, but their threat is less serious.
