Plants – Rose – Climber
Plant Patent
1999-05-21
2001-11-27
Nelson, Amy J. (Department: 1661)
Plants
Rose
Climber
Plant Patent
active
PP012232
ABSTRACT:
SUMMARY OF THE INVENTION
The original tree of the present invention was discovered and selected while growing among open-pollinated Linden seedlings being grown at Portage la Prairie, Manitoba, Canada. The seeds used to produce the seedlings were obtained from an extremely hardy Littleleaf Linden
Tilia cordata
female parent tree growing at the Morden Research Station, Manitoba, Canada, since about 1942 and were planted during 1980. The seed source for this parent tree (non-patented in the United States) had been obtained in Manchuria in the late 1930's by Dr. Frank Skinner and was considered to be a distinct form of
Tilia cordata
. The male parent of the new cultivar of the present invention is believed to have been a nearby Mongolian Linden
Tilia mongolica
(non-patented in the United States) since the characteristics of the new seedling included golden buds, exfoliating bark, thin leaves, and early fall leaf coloration.
The outstanding qualities of the new cultivar were first observed during 1988. Since that time the new cultivar has been carefully preserved and studied. Had we not discovered and preserved the new cultivar of the present invention it would have been lost to mankind.
It was found that the new
Tilia cordata×Tilia mongolica
Linden tree cultivar of the present invention exhibits the following combination of characteristics:
(a) Exhibits an upright crown which renders it particularly well suited for growing in a setting where a reduced crown spread is desired.
(b) Forms attractive glossy medium green foliage during the summer and consistent golden yellow foliage in the fall that displays good resistance to leaf gall mites and fungal leaf spotting.
(c) Forms attractive exfoliating grey-brown bark once the tree reaches a caliper of approximately two inches.
(d) Forms on a moderate basis fragrant flowers and a sparse seed crop, and
(e) Exhibits superior winter hardiness and a high degree of tolerance to winter sunscald damage.
It additionally has been observed that gold-colored buds are formed in late summer which turn to reddish-brown during the winter. The inherently upright grown habit reduces the need for the continual staking of budded whips. The hardiness is found to be superior to that of the ‘Ronald’ Linden (U.S. Plant Pat. No. 8,239). The new cultivar is particularly well suited for growing as an attractive boulevard tree.
The new cultivar of the present invention has been asexually reproduced at Portage la Prairie, Manitoba, Canada beginning in 1988 by budding on Littleleaf Linden
Tilia cordata
rootstock. Such propagation has demonstrated that the combination of characteristics described herein is stable and is successfully transmitted to succeeding generations.
The new
Tilia cordata×Tilia mongolica
Linden cultivar of the present invention has been named the ‘Harvest Gold’ cultivar.
Durand James R.
Ronald Wilbert G.
Bailey Nurseries Inc.
Burns Doane , Swecker, Mathis LLP
Grunberg Anne Marie
Nelson Amy J.
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