FREQUENTLY ASKED QUESTIONS

1 .  When should I use 2A modified and when should I use 2B stone?

2A MODIFIED is typically used when a solid compacted base is needed.  Uses include driveways and under sheds.  2B STONE is used where drainage is needed.  Uses include perforated pipe, placement under concrete to prevent frost heaving and  cracking concrete.  2B STONE can also be used under storage sheds when moisture could be a problem.  When 2B STONE is used under sheds you will need to contain it with a border to prevent the stone from getting into your lawn.

2.   I am filling in a deep hole, what would you recommend?

Structural fill is used to fill in deep holes.  Fill has very little organic matter which avoids continual settling over long periods of time and it is less expensive than topsoil. 

If topping fill with topsoil for reseeding purposes, then a minimum of 3 inches of topsoil should be placed on top of the fill.

3.  What is the difference between Oak Bark and Hardwood mulch?

HARDWOOD and OAK BARK MULCH are both naturally colored mulches.  HARDWOOD is less expensive and color fading is slightly faster than OAK BARK.  OAK BARK is finer in texture which provides a smoother appearance.  There is a slight tendency for finer mulch to "crust" or "mat" which tends to shed water over time rather than allow it to pass quickly through to the soil.

4.  What type of soil would I use for planting grass?  For flower beds?

TOP DRESSING (TD) and SCREENED TOPSOIL (ST) are very good for grass seed plantings.  There is a difference in long term performance.  TD will require more attention in watering consistently during grass seed germination (usually 7-28 days) due to the soil classification of a sandy loam.  ST is a clay loam which holds moisture better.  TD will in the long run provide a much better lawn from better root aeration and higher organic matter.  ST over the long term has a tendency to harden thereby increasing difficulty for plug (mechanical) aeration and natural aeration. For flower beds and gardens TD is the best choice because of the high organic content and sandy loam classification.

Summary of Soil Differences:

TD requires more watering initially during seed germination, but provides a better long term lawn.  No fertilizer needed. 

ST is easier during initial grass seed germination requiring less watering.  However over the long term the soil will harden and require fertilizer.  For more information on grass planting with TD or ST click here.

For flower beds and gardens TD is the only way to go.  Higher organic matter and excellent root aeration will make a world of difference for your flower beds and gardens.

5.  I am putting up a shed what type of stone should I use underneath and why?

Answered in question 1

6.  What type of stone should I use for a driveway?  2A or 2B?

Answered in question 1

7.  What is growing in my landscape mulch?

Penn State College of Agricultural Sciences and Cooperative Extensions tells us.