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Bob Travis
Bob Travis

Sweet Honeysuckles

Bob Travis
Bob Travis

Photograph by Flickr user Bob Travis.

When I bought my first house, it came with a cement pond that the realtor didn’t even know about, because it was covered with honeysuckle vines. It took me months to remove all the honeysuckle, because the roots were thicker than my arm! In the US, Lonicera japonica is an invasive species that grows uncontrolled in moderate climates. It can cover buildings like kudzu, but it is also strong enough to strangle trees. However, when the blooms expose the sweet nectar inside, it can make the whole neighborhood smell like heaven.

Photograph by Flickr user Manuel M. Ramos.

There are about 180 species of honeysuckle plant, but most of those are native to Asia. Only a couple dozen belong naturally to Europe, India, and North America. The problem with honeysuckle is that travelers want to take the beautiful flowering vines away from their native habitat, and that's when they become invasive species. Honeysuckles that know their place behave much better.

Photograph by Flickr user Anita Gould.

Bell’s honeysuckle (Lonicera x bella) is a hybrid with lovely pink flowers that was cultivated from a Siberian species (Lonicera tatarica) and an Asian species (Lonicera morrowii). This beauty has a price, as Bell’s honeysuckle has become an invasive species in Wisconsin, New England, and other parts of the U.S. The seeds are spread by birds that eat the honeysuckle’s red berries. The blooms can also be white, so it is sometimes difficult to identify.

Photograph by Flickr user Emma Cooper.

The blue-berried honeysuckle (Lonicera caerulea) is one of the few honeysuckle species that produces edible fruit. It is also known as a honeyberry bush. You might not even recognize it as a honeysuckle; it grows as a shrub instead of a vine. The plants are cultivated for food in Russia and Japan.

Photograph by Bob Bors.

The berries are blue and come in varied shapes, and the fruit inside is purplish-red when the berries are ripe. The flavor is said to be similar to that of raspberries or blueberries, depending on the variety.

Photograph by Flickr user InAweofGod’sCreation.

Trumpet vine (Lonicera sempervirens) is a honeysuckle species native to the eastern United States. If conditions are right, trumpet vine can grow out of control. They are sometimes planted to compete with the invasive L. japonica. The bright red flowers attract hummingbirds to the sweet nectar inside as well as insects.

Photograph by Flickr user Paul Williams.

The gold flame honeysuckle (Lonicera x heckrottii) is a hybrid cultivar developed for its beautiful colors, which range through yellow and pink to orange, purple, and red. In warmer climates, these plants bloom all year round! Though it is a vining plant, gardeners who trim them can get them to grow like a shrub.

Photograph by Walter Siegmund.

Orange honeysuckle (Lonicera ciliosa) is native to the American West. It produces red berries that are edible, but are not widely used.

Photograph by Flickr user Hindrik Sijens.

Honeysuckles are beautiful and fragrant when they bloom, but as many species are invasive, you should always check and make sure any plants you buy are native to your country. A friend with an existing honeysuckle vine might let you take cuttings and propagate your own. If you live in an area where the common Japanese honeysuckle (Lonicera japonica) grows, you can wait and they'll probably invade your yard sooner or later. But beware: if you want them in your yard, you should to give them something sturdy to grow over besides trees. And a healthy plant will send out shoots to places you may not want them to go. 

Photograph by Instructables member Falaco Soliton.

This is how you get at the honeysuckle nectar if you don’t have a hummingbird beak: Carefully pinch the bottom of the flower, not all the way through, just enough to cut the petals. Then gently pull the end, which should pull the style through. The style will scrape the nectar from the inside of the petal, and you’ll see a tiny drop of nectar, which is all sugar water with a tiny amount of fragrance. See more pictures of the process at Instructables. Keep in mind that the flowers of Lonicera japonica are also edible, in case you want to add a sweet tidbit to your salad. If you aren’t sure what type of honeysuckle you have, it’s best to avoid eating the flowers or berries, because many are toxic.

Honeysuckle almost demands a love/hate relationship, but in May and June, or whenever they bloom in your area, it's hard to hate them.

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Afternoon Map
A New NASA Map Shows Spring Is Coming Earlier Each Year
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Climate change is shifting Earth’s seasons. Winters are getting shorter, and the warmth of spring has started to arrive earlier and earlier, messing with the timing of processes like animal migrations and the budding of new plant growth. In a series of graphics spotted by Flowing Data, the NASA Earth Observatory shows how much earlier new leaves are arriving in some parts of the U.S., and how much earlier they reach full bloom.

The data comes from a 2016 study of U.S. national parks, so the maps only cover seasonal changes within the park system. But since there are so many parks spread across the U.S., it’s a pretty good snapshot of how climate change is affecting the timing of spring across the country. The map in green shows the difference in “first leaf” arrival, or when the first leaves emerge from tree buds, and the map in purple shows the arrival of the first blooms.

A map of the U.S. with a colored grid showing where leaves are coming earlier
Joshua Stevens, NASA Earth Observatory

Around 75 percent of the 276 parks analyzed in the study have been experiencing earlier springs, and half had recently seen the earliest springs recorded in 112 years. In Olympic National Park in Washington, the first leaves are now appearing 23 days earlier than they did a century ago, while the Grand Canyon is seeing leaves appear about 11 days earlier. National parks in the Sierras and in Utah are seeing leaves appear five to 10 days earlier, as are areas along the Appalachian Trail. Some parks, however, particularly in the South, are actually seeing a later arrival of spring leaves, shown in dark gray in the graphic.

A map of the U.S. with a colored grid showing where blooms are coming earlier
Joshua Stevens, NASA Earth Observatory

The places that are witnessing earlier first blooms aren't always the ones with extra-early first leaves. The Appalachian Trail is blooming earlier, even though the first leaves aren't arriving any earlier. But in other places, like Olympic National Park, both the first leaves and the first blooms are arriving far earlier than they used to.

“Changes in leaf and flowering dates have broad ramifications for nature,” National Park Service ecologist John Gross explained in the Earth Observatory’s blog. “Pollinators, migratory birds, hibernating species, elk, and caribou all rely on food sources that need to be available at the right time.” When temperatures get out of sync with usual seasonal changes, those species suffer.

[h/t Flowing Data]

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These Fake Flowers Could Help Scientists Study At-Risk Bees
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If you haven't heard, the world's bees are having a crisis. According to one recent study, bee populations in some areas have plummeted by 75 percent in a quarter of a century. Some countries have introduced legislation banning certain pesticides in response to the news, but solving the complicated problem will likely require much more research. In order to gather better data on bee behavior, one new media artist has developed a machine that can give scientists a bug's-eye view.

As Co.Design reports, Michael Candy's Synthetic Pollenizer is designed to blend into a bee's natural environment. Yellow circles bolted around the opening of the device imitate the petals on a flower. Tubes pump real nectar and pollen into the center of the fake flower, so when bees land on it to feed, they're collecting real reproductive materials they can spread to the next plant they visit.

Candy, who's based in Brisbane, Australia, originally conceived the apparatus as a way for scientists to track the pollinating behaviors of bees. The synthetic flower is outfitted with cameras and dyes, and with enough of them distributed in the wild, researchers could see which bees travel to certain places and how long they stay.

After his concept reached the final round of the Bio Art and Design awards in the Netherlands, Candy decided to create his own prototype with help from an urban beekeeper in Melbourne, Australia. The invention worked: Bees mistook it for real flora and carried pollen from it to their next destination. But to use it for tracking and studying bees on a larger scale, Candy would need to build a lot more of them. The pollinators would also need to be scattered throughout the bees' natural habitats, and since they would each come equipped with a camera, privacy (for nearby residents, not the bees) could become a concern.

Even if the concept never gets the funding it needs to expand, Candy says it could still be used in smaller applications. Fake flowers designed to look like real orchids, for example, could encourage the pollination of endangered orchid species. But for people studying dwindling bee populations, orchids are low on the list of concerns: 30 percent of all the world's crops are pollinated by bees [PDF].

[h/t Co.Design]

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