Original Duncan Tree Sister Tree to Duncan 
Thougii over eighty years old, these trees are still producing enormous crops of fruit 
GRAPEFRUIT 
The Grapefruit industry of today is a growth of not more than thirty-six years. The increase in 
cultivation, j)roduction, and use of Grapefruit is without a parallel in American horticulture. It is 
Florida's greatest single fruit contribution to the tables of the world, and it is in Florida that its culture 
has reached its greatest development. Its consumption has increased faster than the supply. Exten¬ 
sive advertising in various ways, resulting in wide distribution, has been a large factor in popularizing 
this comparatively new and very wholesome fruit. Prices obtained by Cirapefruit growers during the 
past two seasons have been extremely good, and there is every indication that these will be main¬ 
tained. In addition, it should be remembered that, tree for tree, a Cirapefruit planting will produce 
twice the number of boxes of fruit that orange trees will at practically the same cost of production. 
For example, under the same conditions, assuming that a six-year-old orange tree will produce 2 or 
3 bo.xes, a Grapefruit tree of the same age will yield 4 or 6 boxes. The market for (Grapefruit is con¬ 
tinually broadening, prices are good, the trees bear heavy crops, and considering the very limited area 
where real Grapefruit can be successfully grown, the outlook is very promising indeed. 
We have tested out and are familiar with nearly all varieties. Those we list cover all reciuiremcnts 
for general planting. While the ripening and marketing period of different commercial Grapefruits is 
not quite so distinctive as that of oranges, still the varieties we grow cover a wide marketing period. The 
variety or varieties selected for planting is largely a matter of personal preference, but we know 
that all varieties we offer are good and are desirable for planting. 
Duncan 
We consider Duncan the finest Grapefruit grown. During all the years we have been in the 
citrus business (and during this time we have grown, observed, and tested a host of varieties'), we have 
never found a Grapefruit which is quite the equal of Duncan in all-round desirability. It has every¬ 
thing a Grapefruit should have, and is lacking in no particular. Its size is exactly what the markets 
want and pay best prices for—54's to 70’s. Its shape is round, slightly oblate, and it packs well. 
Color a clear light yellow, with oil-cells showing through the smooth skin. The juice content is par¬ 
ticularly heavy and possesses more than any other Grapefruit the true sweet-bitter-acid-grapefruit 
flavor. The season of this fine Grapefruit is an extended one. It is ripe enough in color and cjuality to 
ship in early December, and it can be held on the tree without deterioration until late in May. We have 
been propagating Duncan for more than a quarter of a century. Our first budwood was secured from 
the original tree, which is illustrated on this page. About a hundred and ten years ago, a Spanish noble¬ 
man, Don Phillippi, settled near (Green Springs, in what is now Pinellas C'ounty. There he planted 
Grapefruit seeds and grew a citrus grove. This is the oldest Grapefruit planting of which we have a 
record, and doubtless many of the old seedling plantings throughout P'lorida owe their existence to this 
Spaniard’s enterprise. One of his trees, still living, produced fine fruit, and seeds of it were supplied 
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