Thanks A1 for the response. I wasn't able to figure out how to post a picture. If I had, the photo would show two pencil point size holes on the blossom end with yellowing around them. I really wish I knew how to post pictures. I've added calcium to the soil about two weeks ago because I was experiencing blossom end rot with my tomatoes and figured everything was in the same soil. As far as the other nutrient deficiencies, I'm using an organic potting mix with steer manure compost on top every couple of weeks. The temps here stay in the mid 80s during the day and my plants see about 6 hours of sun. I water for 20 minutes before the sun comes up using a sprinkler, and occasionally in the evening depending on how the plants look. The trades have been blowing regular. The wind is calm in the morning but blows throughout the day on a consistent basis. As far as the SVB, I don't even know if they are present here on Oahu. I've seen no other evidence and I'm looking every day. The only insects I see is the small ants and even those are on the decline. I appreciate your thoughts. If you tell me how to put pictures here, I have some quality ones. Thanks

one would suspect.. that if someone intentionally planted it.. they would have planted a fruit bearing tree.. dont you think??? [that is why i asked] but if it was grafted .. and it failed above ... then what you might have.. is a sterile understock ... i would waste a minute getting rid of it.. and if i wanted a tasty fruit tree.. mail ordering a good named variety ... [and i would not waste time digging it up.. i would cut it flush.. apply stump killer.. and plant a new tree a few feet either way.. wherever i could dig a hole ] and the peeps in the fruit forum.. might have recommendation on such .. for your area ... but.. and i just reread the initial facts.. but perhaps i missed something ... last year.. we had a FREEZE ... not frost.. at fruit flowering time ... every fruit tree in the yard.. but one.. lost their flowers. and nothing fruited ... perhaps that happened with yours??/ ... [it was a major loss for the fruit industry in MI] .... and when thinking of micro-climates.. it doesnt matter what other trees in your yard did ... and if that is possible.. maybe you do want to waste another year or two finding out .. but i might still find a spot for a new tree ... so when i give up on this one.. the new one is raring to go... such makes the removal aspect.. easier to do good luck ken

Agree with wcgypsy, it's Nightshade. And yes, like so many of the other solamum family (potatoes, tomatoes), the green parts and green, unripe fruits are poisonous. If you're uncomfortable, pull it out. The sap can be irritating so some people, so wear gloves. I believe, however, like tomatoes, the completely ripe berries are not poisonous, but that may not be enough for you to keep it in your garden :-) Patty S.

I have an update on the tree. The current owner e-mailed me, saying that it is, indeed, some kind of a lime tree, but that he didn't know which type. He is in contact with the original owner who planted the tree, and will get back to me with the information. He also said I can have all the limes I want, and offered to lend me his ladder :). If the original owner doesn't remember or I don't hear back, I will take the leaves and fruit for identification. The current owner's recollection is that the tree came from a local nursery, so it might be some common sweet lime. I will try to get better pictures.