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Armstrong Selecl 
For more than 40 years Armstrong Citrus trees have been 
planted throughout California and many of the largest and finest 
producing orchards in the State are planted with Armstrong 
trees, while thousands of California home gardens have one or 
more Armstrong Citrus trees producing delicious golden fruit. 
Armstrong Citrus trees will meet every test for qual¬ 
ity. Our seed is the best that can be obtained. Our 
seedlings are rigidly graded in the seedbeds and in 
the nursery row, while our buds are cut from the finest 
producing groves in the Southwest. Armstrong trees 
can be planted with confidence. 
Citrus trees can be planted at almost any time dur¬ 
ing the year in California, although the spring months 
are preferable. The trees are usually supplied with a 
ball of earth on the roots but may be supplied with 
bare roots if desired. The prices are the same for 
both bare root trees, which weigh two or three 
pounds each packed, and the balled trees, which 
weigh from forty to sixty pounds each. 
Mr', 
This young 
tree of the Robert¬ 
son Navel is but three 
years old from the bud. 
Observe the heavy crop of 
beautiful fruit. 
The Robertson Navel 
Calif or nia’s New Orange 
Several years ago Mr. Ray Robertson discovered on a 
Washington Navel Orange tree in Redlands, California, a 
limb which he recognized as being distinctly different 
from the rest of the tree. This limb had an unusually heavy 
crop of fruit, and the fruit itself was larger, smoother 
skinned, and of even better quality than the Navel oranges 
on the balance of the tree. It was soon recognized that a 
distinctly new citrus variety had been found, and now 
trees of this new Navel Orange, the Robertson Navel, are 
being distributed by the Armstrong Nurseries. 
The most remarkable characteristic of the Robertson 
Navel its ability to bear enormous crops. Year after year 
the trees are loaded down with fruit, and they unquestion¬ 
ably bear much heavier crops than the Washington Navel. 
In appearance, color, tenderness, flavor and juiciness the 
Robertson is equal to the finest Washington Navel, which 
means that it is probably the finest eating orange in 
WHY THE ROBERTSON NAVEL OUTBEARS OTHER ORANGES 
This photograph illustrates the reason why trees of the Robertson Navel never 
fail to set a heavy crop of fruit. The larger cluster of fruits on the right are 
those of the Robertson Navel, while the smaller fruits on the left are those of 
the ordinary Washington Navel. Both clusters were picked from trees but a 
few feet apart on July 10th and are average specimens of each variety at 
that time. The fruit of the Robertson Navel is so large in June and July that 
hot weather does not affect it, while it causes the smaller fruits of the 
Washington Navel to drop. 
the world. 
Another important inherent characteristic of the Robertson Navel 
is its habit of ripening fully three weeks earlier than the Washing¬ 
ton Navel—an extremely important commercial advantage in the 
early ripening districts and a valuable characteristic anywhere 
because it provides a longer ripening season. 
Returns from the original orchard of Robertson Navels have been 
fully one-third more per field box each season than from ordinary 
Washington Navels in the same grove, because it is the first fruit 
on the market from that district. The heavy crops borne by the 
Robertson and its long ripening season will in our opinion make it 
a profitable commercial variety. For home planting, there is no 
finer winter orange. 
The Robertson Navel is protected by U. S. Plant Patent No. 126. 
Every tree sold carries a tag bearing this number and unless it 
does carry such a tag it is not a genuine Robertson Navel. 
Prices on the Robertson Navel: 
Each Per 10 Per 100 
1- year trees.$3.00 $27.50 $250.00 
2- year trees . 3.50 32.50 300.00 
Write for prices on 250 or more trees. 
Standard Orange Varieties 
See Prices Top of Next Page 
Washington Navel. This famous winter ripening Orange is largely 
responsible for California's world-wide citrus fame. The fruit is large, 
with the characteristic navel at the blossom end, and in flavor, juiciness 
and general high quality, it is not excelled by any other Orange. The 
skin peels off readily, while the sections are easily separated without 
breaking. While easily grown anywhere in Southern California, it is at 
its best in the foothills and the valleys a few miles removed from the 
coast. December to April. 
Valencia. The best summer orange the world over is the Valencia. As 
the Navel season closes in the late spring, the Valencias begin to ripen 
and are available throughout the summer and fall months. The medium¬ 
sized fruit is juicy and sweet, with few seeds, and the tree is the largest 
of all citrus varieties. Plant Valencias for your summer orange juice. 
April to October. 
Mediterranean Sweet. An old favorite Orange, grown for many years 
in California. Medium sized, thin-skinned fruits of excellent quality, ripen¬ 
ing between the Navel and the Valencia, and possibly a little hardier 
than either. One of the finest oranges for the desert regions. March to June. 
Thompson Navel. Similar to Washington Navel but ripens a few days 
earlier and has a thinner, smoother peel. A good home Orange and once 
of commercial importance for its earliness but now superseded by the 
Robertson Navel. November to April. 
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