>>When ever a bunch of pine Trees have been growing in a area. The
>>ground will become very high level of acid in the ground. Very few
>>plants or grass will grow under a pine tree because of the high acid
>>level of the dirty. To get the high level of acid down. You can put
>>burnt ashes of fire wood or lime down and then till it up to kill
>>the acid level. Get the acid level down and things will start to
>>grow there or wait about 20 years and the acid will dissovle by
>>it'self. Very rarely will you see a lot of brush or green grass
>>under a bunch of pine trees.
> Thanks, I will add lime to counter acidity, your advice makes complete
> sense as the ground beneath the pins was barren.
> Which brings up a question, I planted a few fruit trees where pines
> grew. Is it too late now to do something to counter the acidity of the
> soil to help those trees? Would dumping a bunch of lime on the ground
I don't believe it is correct to assume the soil is acidic because pines
grow there. Ours is sandy/alkaline and pines grow fine. Taking a soil
sample from several areas, then taking it to extension service is
recommended here to assess for pH, soil pests, nutrient deficiencies, etc.
Roundup is not a great idea, especially in root zone of plants you want
to keep. It would not be necessary unless the weed growth is too heavy
for the tiller. There is plenty of weed seed in what you will till, so
the Roundup is not "final" anyway.
I wouldn't plant grass up to the fruit trees, because you may damage the
trunks mowing. Is is generally recommended that you mulch (properly,
not right up against trunk). Garden centers will sell you a lot of
stuff, like tree wrap, that isn't necessarily good for fruit trees.
Here is a link to Illinois Extension Service. Our extension service,
locally in Florida, is a great resource - can bring in weeds or pests
for identification and advice, talk to master gardeners for advice.