The tumbleweed dispersal strategies are unusual among plants; most species disperse their seeds by other mechanisms. Many tumbleweeds (though by no means all) are ruderal species, opportunistic agricultural weeds. Tumbleweeds have been recorded in the following plant families:
The most obvious is temperature. If the air temperature is above 32Â°F snow and ice will start to melt, at or below 32Â° and it will remain frozen. Think about a popsicleâ¦ inside the freezer it stays frozen, outside it starts to melt. The amount of sunshine plays a big factor.
Calcium Chloride currently holds the record for melting ice at the coldest temperatures. While potassium chloride can melt ice down to approximately -13Â°F (-25Â°C) and rock salt down to -10Â°F (-23.3Â°C), Calcium Chloride can melt down to -25Â°F(-31.7Â°C). This makes Calcium Chloride ice melt the most effective ice melter during harsh winter conditions and heavy snowstorms.