HARDY CLIMBING VINES 
Hedera helix Note: Until larger quan- 
THORNDALE SUB-ZERO ENGLISH IVY tities of Thorndale Ivies 
; are available, orders for 
Location: Sun to dense shade. more than 100 plants from 
Soil: Any good garden soil but prefers rich, one customer cannot be ac- 
damp soil for most luxuriant growth. cepted. 
Ultimate Height: 50 to 100 feet. 
These Sub-Zero English Ivies with their glossy, 
evergreen leaves, are the descendents of a remark- 
ably hardy parent plant which has withstood 25 
Chicago winters without protection. Many gener- 
ations later the offsprings of this great Ivy are 
continuing to display the same uncommon hardi- 
ness. They have been tested under all sorts of 
growing conditions and have continued to prosper 
where many other plants have failed. Most of 
them came through in fine shape in the winter of 
1951 when the temperature dropped to 31° F 
below zero here in Woodstock. 
The Thorndale Sub-Zero Ivies are strong, vigor- 
ous growers and will usually make a growth of 2 
to 4 feet the first season if planted in good, rich 
soil in shady or semi-shady locations. They may 
be planted in open beds as well. Plants in our 
nursery rows certainly have not wilted under the 
burning sun as long as they are thoroughly watered 
during dry weather. They will do well in almost 
any soil but are at their best in ground which has 
been improved with well rotted leaves or peat 
moss topped off with a generous application of 
bone meal or similar type of organic fertilizer. 
Winter protection. Should the plants be pro- 
tected? The first winter or two, by all means. 
This will give them a chance to acclimate them- 
selves in their new location until they are firmly ips 
established. A light mulch of peat moss, oak i 
leaves, hay, pine boughs or similar materials is all 
that .is needed. Cover them after the ground is 
frozen hard. For additional instructions see page 8. 
Planting Distance: for covering a wall or fence, 
vines should be planted 6 to 8 feet apart; 12 to 
24 inches if used as ground covers under trees, 
as borders or grave covers. 
Strong potted plants from 2% inch pots, 
Each Sl2o 12° $10.00 
2 2.00 25 18.75 
6 5.00 100 75.00 
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