Rocky Hill navel orange

Citrus sinensis (L.) Osbeck

CRC None
PI 658377
VI 180


Has not been planted in the CVC yet.


Selection of 'Thomson' navel from Rocky Hill, Lindcove, California. 'Thomson' originated as a limbsport of 'Parent Washington' at the ranch of AC Thomson in Duarte, California in 1891.

Rootstocks of accession

Carrizo citrange, C-35 citrange

Season of ripeness at Riverside

November to January

Notes and observations

''Thomson Improved' and 'Thomson' are synonyms. 'Thomson' is a selection of 'Parent Washington' that differs in being earlier than 'PW', however with fruit that do not hang well and do not color as well as 'PW'. The tree is also less vigorous than 'PW'. (The Citrus Industry, 1967, 1:483). This selection is supposed to be earlier maturing with good color and production than the original 'Thomson'.


Commercially available in California through the Citrus Clonal Protection ProgramClick here to order budwood.

USDA Germplasm Resources Information Network page for Rocky Hill navel orange


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