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Elizabeth Blackstone of West End Nursery, left, chats with customer Ann Brenner of Ross while Brenner selects a pair of native milkweed plants at West End Nursery in San Rafael on Tuesday, Aug. 30, ...

Many gardeners will tell you that aphids are the bane of their existence. According to a new study from the University of Florida, these tiny pests also pose problems for the iconic monarch butterfly.

Though some believe tropical milkweed is responsible for declining population levels of monarch butterflies, researchers at UC Davis show that the plant neither helps nor harms the charismatic species ...

Tropical Milkweed is a popular ornamental plant featuring bright orange and yellow flowers. It is often planted in yards to attract the iconic monarch butterfly, which lays its eggs on the milkweed as ...

Monarch butterfly populations have declined to critically low numbers over the past 20 years, and it appears to be related to the increased use of tropical milkweed in our gardens and public spaces.

MARIN CO., Calif. (BCN) — Agriculture officials in Marin County banned the sale of non-native tropical milkweed this week, according to the county agriculture commission. An Aug. 24 memo from the ...

Add Yahoo as a preferred source to see more of our stories on Google. A monarch butterfly sits on native cocoplum. We have just learned that the iconic monarch butterfly may be placed on the U.S. Fish ...

The red and yellow blooms of tropical milkweed, Asclepias curassavica, are ubiquitous in North Florida butterfly gardens. This non-native milkweed has exploded in popularity as demand for milkweed ...

When oleander aphids infested tropical milkweed, monarch butterflies laid fewer eggs on the plant, and the caterpillars developing on those plants were slower to mature. Many gardeners will tell you ...