The pine needles tend to interlock with each other, holding fast.
A common concern with using pine straw as a mulch is fear that it may attract pests. There is some truth to this.
Pine straw piles provide cover for small insects and rodents. They can burrow down into a thick layer of pine needles easier than they may be able to with bark mulch or treeclear.barted Reading Time: 8 mins. Dec 25, If you live in a high-moisture environment, then you may find the amount of precipitation the pine needle straw mulch holds creates new difficulties in landscape management for you.
The plants like the higher temperatures and additional water, but so does mold, mildew, and treeclear.barted Reading Time: 10 mins.
Green straw will quickly dry and change to an almost neutral pH. You can’t put new pine straw over old. Sure you can! If you put 3”-4” down last year, it has probably flattened out and started to decay. Simply add another 2”-3” to dress up the bed and you should be good for another year. Pine straw will cause disease and spread to my plants. Pine straw will not cause a treeclear.bar: Master Gardener.
A Potential Fire Hazard. Pine needles are rich in oils and when dry, they’re highly flammable and spread flames rapidly. Pine straw is the second most combustible mulch after shredded rubber.
For your own safety, keep pine mulch a minimum of 3 feet and ideally 30 feet from any combustible part of your home. Jan 02, Keep pine straw mulch shallower in moist areas. If an area is typically moist (spots that are shaded all day or near the gutter outlet) the mulch needs to less than 2” deep. Opt for long or standard length pine needles that are on the heavier side.