Vinca Species, Bigleaf Periwinkle, Blue Periwinkle, Greater Periwinkle, Large Periwinkle

Why is this plant listed as "poisonous" in all parts?

It's listed as an herb in Charles W. Kane's "Herbal Medicine of the ...Read MoreAmerican Southwest" (although he emphasizes mainly external applications), in John Lust's "The Herb Book", where either Vinca Major or Vinca Minor is recommended as a tea for nervousness, and in Matthew Wood's "The Earthwise Herbal", where both tinctures and infusions are recommended.

Surely if all these herbalists recommend that people take teas of the plant into their body, it is not poisonous!

If anyone would like to email me a response to this, I'd appreciate the input.

Ziggy

wyrdmeginthew@yahoo.com

I live in the Houston area, and I have this plant growing in a flower bed - it gets afternoon shade. It is very drought tolerant, and pr...Read Moreevents the weeds from forming because it is an excellent ground cover. It grows around my roses and shrubs and doesn't try to climb them. I love the blue flowers in spring time. This is an excellent plant for hot and humid areas. It spreads slowly but is not invasive or a problem. Perhaps our clay soil slows it down a little bit. I plan on transplanting it to other parts of my garden where I need to prevent weeds from taking over. The varigated leaves are very pretty even when it is not in bloom.

I don't like this plant. Although it is native here, it is aggressive and a nuisance to keep in bounds. My mom likes it though.

The invasiveness must be a climate issue (Cpt. Obvious reporting for duty) because I don't have a problem with it in 6b/7a Philadelphia. ...Read More

In fact, I wish it were a little more vigorous because I had to walk on some of mine to pull weeds from my birdseed and to put in some bulbs and it seems to resent being trod upon because it has been very slow to recover in the spots where I walked the most.

I hate this stuff, it is a major headache. Does anyone know when these plants produce the seeds? I want to cut it back and start pullin...Read Moreg up as soon as possibe but I don't want to do it if it has seeds that will spread even more than they already have. I live in N.C. and today is May 1, 2009. If anyone knows anything about this plant's timing on seeds please let me know at: gmsource@hotmail.com

A much stronger grower than the variegated version...this is a great plant, I love it.

I like this for the acidic shady area out back where nothing else grows under the pine tree. It's a fantastic filler plant. However, it w...Read Moreas very neglected and when I moved in, the only thing growing here. So I've had to put in borders around it in order to keep it under control and be able to grow other plants. Otherwise nothing has a chance and anything else gets choked out.
They are very pretty, though, and if you have an area where it's okay for them to just grow wild and nothing else seems to work, this is the plant for you. However, know that you will need to take care any place else you plant it.

I have both vinca major and minor in my yard. Vinca major is the much more invasive of the two, growing over it's smaller sibling anywher...Read Moree the two meet. Let me put it this way: you know a plant is invasive when it chokes out the baby bamboo that's randomly growing in your flower bed... I've pulled out a pile that overflowed a wheelbarrow, but unfortunately that was just one 10 x 2 ft area.

Living tendrils are difficult to remove from the ground, as they have an extensive and spidery root system. Any root that remains with most assuredly grow into a new plant. As hard as they are to deal with, they're still easier than the dead tendrils found underneath: these dry into cord-like whips that seem even more tightly rooted than their living counterparts.

To be so invasive, this plant reacts very poorly to the hot and dry summer days in my area: the thin leaves wilt easliy leaving me with mounds of what almost look like wilted lettuce greens. While I like the larger flowers of v. major, I much prefer the foliage on v.minor: the leaves are smaller, more closely spaced, darker, and hold up better in the summer.

Horribly invasive even when completely neglected. Roundup won't touch it, and digging makes only a small dent as the tiniest piece of ro...Read Moreot will continue to spread. Also loves to hide in other plants. My liriope is infested with vinca now. It does have pretty new foliage and blooms in February here, but by summer's heat it's just a tangle of vines, some 15 feet long. Will also jump any edging to take over your lawn. If you're in zone 7, please reconsider before adding this one - or come to my house with a shovel and large truck.

Greater Periwinkle Vinca major is naturalized in Texas and other States and is considered an invasive plant in Texas.

I bought a flat of periwinkle b/c I saw a large shaded bank covered with them in Santa Paula CA. So I just planted part of the flat (42pl...Read Moreants) Under my trees. Hoping they will become groundcover without having to bring irrigation specifically to them. There are some drip hoses here and there and some might get some water from the grass sprinklers. I will report back. I hope they go everywhere. I am in zone 10b San Diego county.

Works well as a ground cover under white oak trees on the south and west side of the house. It coexists well with the interplanted ferns,...Read More hostas, Solomon seal and spring bulbs.

Vinca major is invasive in riparian (streambank) areas in California and other Western US states. Problems it causes are displacement of...Read More native species, erosion and bank destabilization, and it is a host for the insect pests blue-green and glassy-winged sharpshooters, which carry Peirce's disease, a pathogen of vineyards and orchards.

The alternative, vinca minor ,is a better choice for landscaping in these regions- it is not invasive. If you have this plant in your landscape, please try to keep it from spreading into the riparian areas.

Grows great on the north side of my house in full shade and on the south side in full sun. Doesn't take much to keep the runners under control.

I have the variegated form of this plant growing as a ground cover in one of my flower beds. It is spreading, as desired, and currently ...Read Morein bloom. It provides an interesting, low-growing background for my other plants.

This plant can become very invasive however if caught early it is easy to eradicate. It is primarily grown for its flowers however it is ...Read Moresometimes grown for its foliage. Very drought tolerant. pokerboy.

Very invasive in this climate (low-elevation, non-desert southern California) and very hard to get rid of. Has naturalized in the wild.