Milkweed is famous for being a virtual cafeteria for a large number of insects to feast upon. Perhaps the most beautiful and well-known
is the monarch caterpillar, which becomes the monarch butterfly. The monarch caterpillar chews along the edges of leaves. Aphids are also found on milkweed, and tend to feed in large groups on the leaves and stems. The blue milkweed beetle feeds on milkweed and can be responsible for holes in leaves. The four-eyed
milkweed beetle is another beetle that eats milkweed and can cause holes. This beetle is red with black spots. Finally, herbicides can cause damage to leaves of milkweed. To take a positive view, holes can be a positive sign that the milkweed is supporting a wide range of insects and butterflies who are dependant on this food source.
Milkweed when cut or torn will exude a thick white sap.
they eat the leaves of a milkweed plant
Milkweed pollen is not much of a problem but some people have a contact allergy to the leaves and sap.
plants having reticulate venation have broad leaves
on milkweed leaves
They lay there eggs on milkweed leaves.
cause that's what they do
Some people are sensitive to the leaves and sap but the plant is not contagious.
milkweed
No, the milkweed plant is not a monocot. The plant in question (Asclepias) instead numbers among the world's dicot. It produces two seed leaves, not one, and therefore receives the dicotyledon, not the monocotyledon, classification.
They don't hurt the milkweed plant, really. They do drink the nectar in the flower and/or lay eggs underneath the leaves of the plant.
The caterpillars feed on milkweed leaves. The adults feed on any nectar-producing flowers such as asters, goldenrod, marigolds, and swan plants.