Prickly lettuce is an herbaceous annual, and rubber content in its sap ranges from 2.5 to 5 percent, Burke said. The plant will grow to a height of 6 to 8 feet in two months, he said. “And that's here ...

The issue: Prickly lettuce (Lactuca serriola) ... Many yellow flowers appear at the end of a flowering stalk that can be anywhere from 4 inches to 6.5 inches tall.

Years from now, you might read about a startup that’ll manufacture rubber tires from a common weed found in this state. It’s called prickly lettuce, and gardeners are very familiar with it. It ...

Prickly lettuce plant (Washington State University) A common, drought-resistant weed known as prickly lettuce, which tends to flourish across the Inland Northwest, ...

Producing rubber from lettuce Date: April 6, 2015 Source: Washington State University Summary: Prickly lettuce, a common weed that has long vexed farmers, has potential as a new cash crop ...

PULLMAN, Wash. - Prickly lettuce, a common weed that has long vexed farmers, has potential as a new cash crop providing raw material for rubber production, according to Washington State University ...

News; Business; Prickly lettuce milkweed could turn Eastern Washington into new supplier of natural rubber Wed., April 8, 2015 Prickly lettuce plant (Washington State University) ...