Cooperative Extension San Joaquin County
University of California
Cooperative Extension San Joaquin County

Posts Tagged: Asclepias speciosa

The Saga of the Milkweed, Bee and Caterpillar

A tattered honey bee seeking nectar from a milkweed blossom encounters a monarch caterpillar. (Photo by Kathy Keatley Garvey)

So here's this tattered old worker bee seeking some nectar from the broadleaf milkweed, Asclepias speciosa. She looks as if she's not only been around the block a few times but around the county several dozen times. Her wings look too ragged to support...

A tattered honey bee seeking nectar from a milkweed blossom encounters a monarch caterpillar. (Photo by Kathy Keatley Garvey)
A tattered honey bee seeking nectar from a milkweed blossom encounters a monarch caterpillar. (Photo by Kathy Keatley Garvey)

A tattered honey bee seeking nectar from a milkweed blossom encounters a monarch caterpillar. (Photo by Kathy Keatley Garvey)


"Well, hello, there!" The antennae of the bee and monarch caterpillar touch. (Photo by Kathy Keatley Garvey)

"Well, hello, there!" The antennae of the bee and monarch caterpillar touch. (Photo by Kathy Keatley Garvey)

A honey bee gets stuck in the sticky pollinia of the milkweed as a monarch caterpillar keeps munching away. (Photo by Kathy Keatley Garvey)
A honey bee gets stuck in the sticky pollinia of the milkweed as a monarch caterpillar keeps munching away. (Photo by Kathy Keatley Garvey)

A honey bee gets stuck in the sticky pollinia of the milkweed as a monarch caterpillar keeps munching away. (Photo by Kathy Keatley Garvey)

Honey bee carries the sticky winged pollen on her leg as she buzzes off. (Photo by Kathy Keatley Garvey)
Honey bee carries the sticky winged pollen on her leg as she buzzes off. (Photo by Kathy Keatley Garvey)

Honey bee carries the sticky winged pollen on her leg as she buzzes off. (Photo by Kathy Keatley Garvey)

Posted on Monday, July 18, 2016 at 4:56 PM

Sharing the Bounty with the Bees

A male leafcutter bee, Megachile sp., in flight, heading toward the milkweed. (Photo by Kathy Keatley Garvey)

Move over, monarchs. Bees--and other pollinators--gravitate toward the enticing aroma of the milkweed, too. The milkweed is widely known as the larval host plant of the monarch butterflies--and a nectar source for the adults--but they have to...

A male leafcutter bee, Megachile sp., in flight, heading toward the milkweed. (Photo by Kathy Keatley Garvey)
A male leafcutter bee, Megachile sp., in flight, heading toward the milkweed. (Photo by Kathy Keatley Garvey)

A male leafcutter bee, Megachile sp., in flight, heading toward the milkweed. (Photo by Kathy Keatley Garvey)

A male leafcutter bee, Megachile sp., sips nectar from a milkweed. (Photo by Kathy Keatley Garvey)
A male leafcutter bee, Megachile sp., sips nectar from a milkweed. (Photo by Kathy Keatley Garvey)

A male leafcutter bee, Megachile sp., sips nectar from a milkweed. (Photo by Kathy Keatley Garvey)

A male Valley carpenter bee, Xylocopa varipuncta, a green-eyed blond, sipping nectar from the milkweed.(Photo by Kathy Keatley Garvey)
A male Valley carpenter bee, Xylocopa varipuncta, a green-eyed blond, sipping nectar from the milkweed.(Photo by Kathy Keatley Garvey)

A male Valley carpenter bee, Xylocopa varipuncta, a green-eyed blond, sipping nectar from the milkweed.(Photo by Kathy Keatley Garvey)

A female Valley carpenter bee, Xylocopa varipuncta, sipping nectar from the milkweed. (Photo by Kathy Keatley Garvey)
A female Valley carpenter bee, Xylocopa varipuncta, sipping nectar from the milkweed. (Photo by Kathy Keatley Garvey)

A female Valley carpenter bee, Xylocopa varipuncta, sipping nectar from the milkweed. (Photo by Kathy Keatley Garvey)

A honey bee leaving with pollinia (pollen structure) from the milkweed. (Photo by Kathy Keatley Garvey)
A honey bee leaving with pollinia (pollen structure) from the milkweed. (Photo by Kathy Keatley Garvey)

A honey bee leaving with pollinia (pollen structure) from the milkweed. (Photo by Kathy Keatley Garvey)

Posted on Wednesday, June 22, 2016 at 5:25 PM

Got Milkweed?

A monarch butterfly sipping nectar from a broadleaf milkweed, Asclepias speciosa. (Photo by Kathy Keatley Garvey)

If you grow milkweed in your yard, you probably have some very special tenants, monarch butterflies (Danaus plexippus). As just about every kindergarten student knows, milkweed (Asclepias spp,) is their larval host plant. Without milkweed, no...

A monarch butterfly sipping nectar from a broadleaf milkweed, Asclepias speciosa. (Photo by Kathy Keatley Garvey)
A monarch butterfly sipping nectar from a broadleaf milkweed, Asclepias speciosa. (Photo by Kathy Keatley Garvey)

A monarch butterfly sipping nectar from a broadleaf milkweed, Asclepias speciosa. (Photo by Kathy Keatley Garvey)

The milkweed is so named for its milky juice, consisting of a latex containing alkaloids and other complex compounds. Carl Linnaeus named the genus for the Greek god of healing, Asciepius. (Photo by Kathy Keatley Garvey)
The milkweed is so named for its milky juice, consisting of a latex containing alkaloids and other complex compounds. Carl Linnaeus named the genus for the Greek god of healing, Asciepius. (Photo by Kathy Keatley Garvey)

The milkweed is so named for its milky juice, consisting of a latex containing alkaloids and other complex compounds. Carl Linnaeus named the genus for the Greek god of healing, Asciepius. (Photo by Kathy Keatley Garvey)

The glow of a monarch butterfly is like a stained glass window.(Photo by Kathy Keatley Garvey)
The glow of a monarch butterfly is like a stained glass window.(Photo by Kathy Keatley Garvey)

The glow of a monarch butterfly is like a stained glass window.(Photo by Kathy Keatley Garvey)

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