MICHIGAN BLUEBERRY MEMBER OF 
GROWERS’ ASSOCIATION SOUTH HAVEN FRUIT EXCHANGE 
HARTMANN’S PLANTATION 
Cultivated Blueberries 
PLANTS AND BERRIES 
ROUTE | : Jan. 19, 1951 
GRAND JUNCTION, MICHIGAN cick east 
Library, U. S. Dept. of Agriculture 
Washington 25, D. C. 
Gentlemen: 
Thank you for your inquiry concerning my Blueberry Plants. 
They are of the improved Cultivated Hybrids. Utmost personal care 
has been taken to grow strong and vigorous rooted plants. State inspec— 
tion is made each year to insure production of good healthy plants. 
Field plantings of blueberries offers both enjoyment and profit 
that cannot be surpassed by any other fruit producing bush. An acre of 
blueberries at mature age will produce from 4,000 to 6,000 pints of fruit. 
Blue berry piants are also used in the garden and for landscaping. By 
furnishing satisfactory conditions, an interested gardener can grow a 
plot of fruitful and delightful plants that will be a source of pride 
to him. 
The ideal blueberry soil is fertile, has plentiful water supply, is 
well drained and aerated, is well supplied with organic matter and is 
acid. Acidity should be in the pH range of 4.5 to 5.5. Several materials 
may be used to increase soil acidity. Weathered sawdust, leaves, rotted 
wood, apple pomace, or acid peat are some. Sulphur or aluminum sulphate 
are also used. 
When ordering blueberry plants for garden or small settings, it is 
advisable to purchase plants more than one year old. 
One year old plants are two to six inches tall. They should be placed 
in nursery rows a year or two before setting out in field planting. They 
may be spaced 8" or 10" apart, with the rows 18" or 80" apart. The plants 
can be cultivated with a hand cultivator or hoe. 
Two year old plants’ are 6 to 12 inches tall. Three year olds are 12 
to 20 inches tall, and four year olds are 20" to 3 feet tall. 
Three year old plants usually have a small amount of fruit the year 
they are set. But it is not until plants are four years and older that 
they produce in marked quantity. 
Two year or older plants may be spaced 4 to 5 feet apart, with rows 
10 ft. apart, if tractor cultivation is to be used. For garden or small 
plantings, where hand cultivation is to be used, a spacing of 4x6 feet 
is sufficient. 
Any fruit buds or flowers that appear the first two years should be 
removed to prevent fruit bearing, until plants are well established. 
