Marr's Early Sweet Orange

Marr’s Early Sweet Orange was reported by Waibel in 1953 as a limb sport found in 1927 on O. F. Marrs’s property in Donna, Texas, in a planting of navel oranges obtained from California. The account documents the reported discovery, not a verified parentage.^⁠[1]

Marr’s Early is described as a round, nonnavel orange with a finely pitted rind and juicy flesh. UCR reports low acidity and seed numbers that vary with pollination; other descriptions differ on rind thickness and seediness.^{⁠[1]⁠[2]⁠[3]}

The tree is described as compact and productive, although sources differ on thorniness. Mary Cennamo describes a sheltered San Antonio tree that rarely needs lights or blankets, while advising protection during colder or prolonged cold; this does not establish an unprotected temperature limit.^⁠[2]⁠[3]

Harvest timing varies by account and location: a UC chart places the season approximately October through February, while a Texas seller says fruit can appear as early as September in some years and be marketed through January.^⁠[4]⁠[5]

In a South Texas rootstock trial, Marrs on Swingle was more productive than on ten other rootstocks and had large fruit, with Brix 0.8 percentage points below Texas sour orange and similar acid content. These are comparative trial findings, not an absolute fruit-quality score.^⁠[6]