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+--- Thread: Invasive identification (/showthread.php?tid=4488)
RE: Invasive identification - bananahead - 04-16-2014
if you show pictures, I can ID every single (wild) plant in Puna for you.
in Orchidland, Im almost 100% sure every (wild) woody bush or tree you see besides Ohia will be non native... and most of these wild alien plants will be invasive.
There are 1,000 native endemic and indigenous plants in Hawaii and over 20,000 non-native plants.
'Glory Bush' IS NOT usually found in Orchidland!!
true Glory Bush (Tibouchina urvilleana) has dark purple flowers and grows in the wild in upper Puna (Volcano Village and surrounding areas), not in Orchidland unless someone planted it there... Glory Bush has been in Hawaii for 104 years.
in Orchidland you will have a lot of its relative called Melastoma candidum (been in Hawaii for 86 years), that has a pink flower.... both Glory Bush (Tibouchina) and Melastoma are part of the 'Purple Plague' or 'Green Cancer' family of plants that are ruining Hawaii (worst is Miconia), in Puna we have about a dozen different plants from this BAD family of invasives ...
Waiawi (Psidium cattleianum Strawberry Guava... 2 types, red fruit and yellow fruit) has been in Hawaii for 189 years, and on my property can reach 24" wide at base and 70'+ tall/long (wrapping and twisting around ea. other, with largest ones Ive ever seen in all of Hawaii in my creek), but usually waiawi are broomstick/baseball bat size (1"-5" wide) or slightly larger and under 30' tall where the soil in thinner. Waiawi will surround Ohia, so your description is accurate, except I would have described the bark as smooth peeling and a orangish-brown color with leaves shinnyish compared to most Ohia leaves (Ohia naturally has many forms with many types of leaves, fuzzy or smooth graygreen to light green etc. especially varying in the color of the new growth)
Best book you can get (Hilo Library) is the 'Manual of the Flowering Plants of Hawaii' (W.Wagner 1990, revised in 1999) a 2 volume set (large white books) with 1918 pages, ....but it is not easy for a newbie to read because of the scientific style of writing and describing the individual species.
PS Roundup, and the cheaper Honcho (both made by Monsanto) are easily the safest plant killers on the market.
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save our indigenous and endemic Hawaiian Plants... learn about them, grow them, and plant them on your property, ....instead of all that invasive non-native garbage I see in most yards... aloha
RE: Invasive identification - microage97 - 04-17-2014
Thanks! I will take some pics while I am out there today. :-)
RE: Invasive identification - kalakoa - 04-17-2014
I followed the suggestion from a previous iteration of this thread: drill the waiwi stumps, fill the hole with your favorite brand of triclopyr-based herbicide.
So far, 100% effective, no damage to the surrounding landscape.
RE: Invasive identification - HPPGuy - 04-17-2014
What exactly is waiawi? How do I identify it?
RE: Invasive identification - Carey - 04-17-2014
Waiawi (strawberry guava) has a very notable long skinny trunk that is orange brown, dk green oval leaves & smallish round red fruits...
A nice well established waiawi patch will be a thicket of trunks & will have roots growing on top of each other. In one forest restoration plots I worked on, the root tangles were up 3 ft. from the forest floor, making an ankle breaking potential...
Forest service ID for & eradication link for waiawi:
http://www.fs.fed.us/psw/topics/invasives/strawberryguava/
RE: Invasive identification - Lee M-S - 04-17-2014
You can download a pdf of the "Handbook of Hawaiian Weeds" at sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0CDEQFjAB&url=http%3A%2F%2Fscholarspace.manoa.hawaii.edu%2Fbitstream%2Fhandle%2F10125%2F6806%2FHaselwood%2526Motter1966.pdf%3Fsequence%3D1&ei=3W9QU6nEEM2uyAS7mYLwDQ&usg=AFQjCNGOnWfoH8rjX_-hKX29H64CJ9VTTg&sig2=yh8FTrM0iXwEsdRozXI9mA&bvm=bv.65058239,d.aWw
if that horrendous link doesn't work, google "Handbook Hawaiian Weeds - ScholarSpace - University of " and it will be the first link. The library system has several paper copies, and you can order it on Amazon, too.
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RE: Invasive identification - tada - 04-17-2014
If your worst problem is waiawi I'm jealous!!
RE: Invasive identification - microage97 - 04-21-2014
Here are some Pics I took yesterday. I have been pulling out what I can where not very secured to the ground or a single stem ect. Else I have been cutting off at the ground and spraying with some 10% 2,4-D amine cut with diesel. I hope the agent orange kills it....
Nasty little bugger. More like a hard wood vine / bush. Weed eater won't chop it much at all and with branches laying throughout a small area it can be a challenge.
http://www.japanish.org/gallery/Aulii_Lot/20140420_125723.jpg
Nasty as well but not as hard as the above, but tends to grown in thickets.
http://www.japanish.org/gallery/Aulii_Lot/20140420_125757.jpg
RE: Invasive identification - HPPGuy - 04-21-2014
That first one is Glory Bush Microage, I am not sure about the second one, looks related though. Glory Bush is very hard to kill (at least in my experience). Let me know how your herbicide mix works for you. Might have to try it myself.
RE: Invasive identification - leilaniguy - 04-21-2014
The first picture is Coster's curse, the second is Melastoma.