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Some of the most successful hedge plants at Tresco are Escal- 
lonia macrantha and Veronicas, Hugenia ayculata, Correas and 
various species of Pittosporum, and the low hedges made by the 
first-mentioned shrubs enable more tender plants to be grown in 
small sheltered enclosures. 
The Tresco Abbey Gardens and plantations fall into three very 
distinct sections : — 
' 1. The garden proper, which includes the rock garden with a 
southern aspect. Here are considerable outcrops of granite rock, 
and it becomes very hot and dry during the summer months. It 
is in this part of the garden that the Mesembryanthemums, 
Crassulas and Pelargoniums flourish as in their native home, and 
in addition, Pimelias, Diosmas, Aloes, Cactoid Euphorbias and 
Puyas grow without trouble, while such bulbous plants as 
Sparaxis and Freesias become veritable weeds. 
2. Then there is all the higher ground above the garden densely 
planted with Cupressus macrocarpa and Pinus insignis, amongst 
which are numerous sheltered bays and enclosures. Here among 
the predominant gorse and heather are planted the Acacias— 
several species, including A. Baileyana, A. longifolia, and A. 
verticilliata, growing and flowering in luxuriance, their only 
enemy being the wind. Several species of Melaleuca, Leptosper- 
mum and Hakea are also making fine bushes. Trees of particular 
interest which have been planted in these sheltered hollows and 
are doing well are Leucadendron argenteum, the Cape Silver tree, 
some 10 ft. high, surrounded by gorse, which probably affords it 
good protection against the wind and also keeps the soil moist, 
Widringtonia Whytei, the Mlanje Cedar, from Nyasaland, Calli- 
tris Sullivani, from Australia, Juniperus bermudiana, the pencil 
cedar, Dacrydium. cupressoides and several species of Podocarpus 
and other interesting exotic conifers. Here also an avenue of the 
Norfolk Island Pine, Araucaria excelsa, has been made. On the 
shady side of the grass drive these trees are making fine growth, 
but on the more exposed and sunny side they are not a success. 
3. The third section of the grounds embraces the northern slope 
of the central hill, and on this side in bays and clearings among 
the trees a considerable collection of Himalayan and Chinese 
Rhodedendrons has been brought together. There are several fine 
quetrum and Nothoscordium are pests with which it is almost im- 
possible to cope effectively. The latter plant introduced by some 
