Author: Roberta (Page 263 of 562)

Seed of the Week: Globe Artichokes

Our multi-speckled mystery seeds from last week were from a globe artichoke, Cynara scolymus.

artichoke-plant-1

Originally from the Mediterranean region, artichokes are grown in warmer regions throughout the world. They are cultivated perennials that are related to wild thistles.

artichoke-leaf

Mature artichokes can reach five feet tall and have large, lobed leaves.

artichoke-leaf-close-up

The leaves are silvery white, giving artichokes the potential to be interesting accent plants in the landscape.

Of course, most people grow them in the vegetable garden for their edible flower buds.

Most of the artichokes in the United States are grown in California. If you have never seen them growing, take a look at this video from a commercial artichoke farm.

 

 

Have you ever seen an artichoke flower? If the bud is allowed to mature, it opens into a stunning purple beauty.

artichoke-flower(Photograph graciously provided by Forest & Kim Starr)

If properly cared for, the flowers will produce seeds.

artichoke-seeds

Artichokes can be grown either from seeds or from plant divisions or cuttings.

Although they are frost sensitive, some varieties of artichokes can be grown in colder areas, especially with protection in the winter. According to the Virginia Cooperative Extension, Thomas Jefferson grew artichokes in his gardens at Monticello in Virginia way back in 1767!

Have you ever grown artichokes?

Check out the Bug of the Week Archive

See that new “Bug of the Week Archive” button in the navigation bar at the top? Go ahead, give it a try.

The list includes virtually all the Bug of the Week posts from this blog, organized by order or arthropod group.

The archive might be useful for:

  • trying to identify a particular insect
  • investigating the insect orders
  • finding out about insect life stages
  • learning more about biodiversity.

A vast majority of the arthropods on the list were found in one small suburban yard near Phoenix, Arizona, which leads to the thought:

“What a very lot of bugs there are!”

Please let me know if you have any questions or comments about the archive, or if you have any suggestions for other ways to make this blog easier to use.

Thank you for your continued support!

leafcutter-bee-male-for post

Bug of the Week: Stilt Bugs

We see these little, mostly black insects every year on the snapdragon flowers and buds.

stilt-bug-5-ps

They look like a cross between a mosquito and an assassin bug, with long legs, a slender body and long slender antennae.

stilt-bug-1-ps

Can you see the spikes on the thorax?

The stripy legs resemble certain mosquitoes, but they don’t act like mosquitoes. They simply walk to the other side of the plant when approached, rather than fly away.

 

stilt-bug-best-ps

This photograph show some of the characteristics used to identify it. Under its head is a yellowish beak or proboscis, which means it is a true bug. It could have been a thread-legged assassin bug, but its antennae are made up of four segments with the end segment swollen (like a butterfly antenna). That makes it a stilt bug, family Berytidae.

These particular stilt bugs are plant feeders, but other members of the family may be predators.

stilt-bug-and-egg-ps

Those long “stilt” legs probably help them avoid the sticky protective hairs of the snapdragon plant.

Do you see any evidence in this photograph that another insect might be sharing the snapdragon flowers soon?

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