Operation Dyna-Gro 
...a Tampa Spectacle! 
Several city blocks in area, Operation Dyna-Gro is a daily, 
spectacular feature of Tampa. Huge cranes, tractors, pul- 
verizers and pumps are at work all year long digging, treating, 
enriching and turning mountainous block-long piles of Dyna- 
Gro through its two-year process of maturing. No Dyna- 
Gro is sold until it is 18 months old, and much of it is 2144 
years old before it is bagged and delivered to our Nursery or 
your home. 
Picture @). Dyna-Gro starts with the digging of raw peat, 
identified by its light color, porous bulk (pyramidal piles). 
Humus is added, bacterial action starts, and piles shrink one- 
fourth in first six months. 
Picture @). During the first year, the ‘“‘young”’ piles are turned 
and twice moved by Holmes huge cranes and tractors, com- 
pletely stirring and mixing bacterial action uniformly, further 
pe down pile. (This is long dark pile in rear of picture 
above.) 
Picture (3). At the beginning of the second year, the pile is 
pulverized in Holmes huge high-powered grinders that “blow” 
it as much as 30 feet to a new location. Humus, tankage and 
phosphate is added during grinding, and Holmes Standard 
Dyna-Gro is ready for your gardens. 
Picture @). Part of the matured, pulverized pile is moved and 
turned at least four more times in the next year and a half, 
with humus and tankage added, to make Holmes Super Dyna- 
Gro. During this second year the pile,shrinks so much that it 
takes four bushels of freshly dug raw peat to make two bushels 
of Super Dyna-Gro! 
Picture ©). Holmes power-shovel tractors load the finished 
Dyna-Gro onto Holmes trucks, for delivery to your home, or 
to Holmes Nursery for bagging. 
It takes tens of thousands of dollars’ worth of equipment, 
decades of know-how, and from one to two and a half years 
of careful work to make Dyna-Gro. Yet it costs you only 
pennies more per bushel than raw, unaged peat. Get Dyna- 
Gro and get your money’s worth! 
