XANAX (alprazolam) HAS a duration of action of up to 6 hours. If you want to know how long after you take it can it be DETECTED, that's different. Most benzodiazapines, when taken on a regular basis, can be detected in the urine from 24 hours to 72 hours.
The color of that mulch is a dark brown, browner than most brown mulches. I thought it was good mulch until I noticed how large the pieces were. They were similar to large chunks of wood more so than mulch.
Mulch can be applied anytime throughout the year. Some seasons are desirable than others. In cold winter months apply only 1 inch thick to insulate the ground to prevent soil warming. In spring mulch should be 2 inches thick and pushed away from planting. In fall mulch should be a 2-4 inch coverage to delay frost penetration, allowing more time for root growth.