Rocky Hill navel orange
Citrus sinensis (L.) Osbeck
CRC Has not been assigned a CRC number
Photos by Toni Siebert, CVC. Photo rights.
Source: Has not been planted by the CVC yet.
Parentage/origins: 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'.
Availability: Commercially available in California through the Citrus Clonal Protection Program.
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