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NATURAL SUB-IRRIGATION for Indoor and Outdoor GARDENS 
SPONGE ROCK 
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be This oddity of nature makes it possible for the first time to go away 
» 4 on vacation leaving plants to thrive for long periods of time by the 
4 
wonderful storage ability Sponge Rock is noted for. This unusual 
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product of nature provides an ideal reservoir for supplying the right 
amount of moisture for most types of vegetation. It is non-toxic in 
character, and is invigorating to plantlife. It is ideally suitable for 
use in dish gardens, cactus gardens, insert planters, outdoor gardens, 
bowl planters, aquarium usages, and many others. 
MINIMUM ORDER 5 POUNDS 
Price Per <j me 4 Price Per 
Pound a é 100 Pounds 

SHIPPING RATES Sere 
Sponge Rock weighs 
about one-half of or- 
dinary rock. It takes 
lowest shipping rates 
and is priced f.o.b. 
, Reno, Nevada. 
Sponge Rock for use in planter and cactus gardens. yo mea 
What Is Sponge Rock? 
Sponge Rock is a solidified lava froth formed by volcanic action into a multitude 
of sponge-like pores. It is extremely light in weight and has the exceptional 
ability to absorb and retain the proper amount of water for most types of 
vegetation. The natural capillary action makes it ideal for even and constant 
moisture. Sponge Rock draws water from the bottom towards the top in 
even amounts, and will keep its moisture for long periods of time. 
How Is Sponge Rock Used? 
Sponge Rock is used for indoor and outdoor gardens and most floral growths 
with little or no soil. After trimming and shaping the Sponge Rock to the desired 
size for the planter or bowl, place plant in recess and pack with earth, humus or 
any kind of fertilizer. The natural capillary action of the, Sponge Rock draws 
water in sufficient quantities for perpetual moisture. Even when the Sponge Rock 
is out of water it will retain moisture for a long time. 
How Is Sponge Rock Sold? 
Sponge Rock is sold by the pound in various sizes and shapes. It is easy to work 
with, any ordinary saw, penknife or screwdriver can cut it with ease. It can be 
hollowed out into any desired shape. Only usable sizes supplied. 
ELIMINATES THE GUESSWORK OF WATERING! 

NEVADA MING TREE COMPANY 
P. O. Box 373 Phone Reno 2-7272 Reno, Nevada 
