A clear difference in HFCWO devices. Since therapies can be effective only when patients comply with them, the SmartVestÂ® Airway Clearance System from Electromed stands apart among high frequency chest wall oscillation (HFCWO) devices.
The 2012 USDA Plant Hardiness Zone Map is the standard by which gardeners and growers can determine which plants are most likely to thrive at a location. The map is based on the average annual minimum winter temperature, divided into 10-degree F zones.
Knowing your 2012 USDA Plant Hardiness Zone is a useful tool when selecting plants for your garden. The zones are based on an area's average annual minimum winter temperature. Use the link above to find out your zone. Then, when you are shopping for plants you should check the zone listed on the plant's tag or label to see if it is suited to your zone. Planting a perennial, shrub or tree whose hardiness zone is Zone 9 in an area that is in Zone 5 means that the plant is likely to freeze and die in winter.