Lily, can you provide a photo of where this wickedly thorny branch is emanating from? The front normal branch is obscuring where the thorny branch is coming from. We are all thinking that you've possibly got a (massive) rootstock sucker, but we can't tell unless you can give us a photo of where this branch starts exactly. If it is emanating from below the graft union, it is rootstock, and should be removed. Patty S.

Old textbooks said that flowers and roots compete for auxins, are use auxins that compete or some such. Anyhow, remove flowers when rooting if you cannot get cuttings with no flowers.

You can chop it back, anytime. As the first poster stated, you need to see how healthy it looks when it re-sprouts. I'd do 4" too. There's a long running saying among nurserymen and nurserywomen that a spirea can be ran over with a mower, and they always come back ... I've actually ran them over with a mower. Worked great. Dax

Snuffles, How's your longan doing now? The little plant there looks gorgeous--leaves are healthy and blooms fantastic. If you decide to keep the blooms, I hope you get some fruit forming for you. I would keep the blooms too .. just because blooms aren't always guaranteed year on year. Right now, I have got 3 juvenile longans growing in the ground. One of them actually isn't too juvenile. I got it 9 years ago when it was about 2-3 ft tall. So, it must be about more than 10 years old now. I planted it in the ground at first, but it kept getting sick with white flies. So, I dug it out again and nursed it to health. A couple of years back, I planted it back into the ground and since then it has grown to 8 ft tall with a lot more new leaves, but the white flies came back to attack it. Now that it's bigger, I think it's also more hardy to withstand the white flies attack. I used to clean the sticky stuff off the leaves, but now that it's bigger, it's hard to do that. Anyway, here's a picture of it bearing some fruit now: Longan Kohala at 8 ft now: close up of the little fruit formation: The second longan I have is a Biew Kiew (slightly more than 5 ft tall). I'm guessing the age is less 5-7 years. It was blooming last year, but I got no fruit from it. This year, no sign of any blooms. Longans have a habit of growing long floppy limps. I just chopped off two of the lanky limps in the middle. If you look closely, you'll see the old dark green leaves beneath the new flushes that shot up. Here's a third longan which is also a Biew Kiew. It's a little over 5 ft too. No blooms this year. The problem I noticed a while ago was this tree was in a "frozen" state, meaning the little budding shoots from last year got dried out. I was waiting to see if they would grow, but they never did, so I decided to rub them off the branches. A few weeks later, I saw lots of new flushes coming up. So, I did learn something new. I was having so much troubles with my lychees and decided to pay more attention to my longans to see if they will perform better for me. At least, with the lychees, they are pretty pest free except for web worms ... which unfortunately is prevalent when there are mature hard wood trees around. Oh yeah, we have some humongous Oak trees around here ... lol. I hope you enjoy your little longan tree now and hope it'll do well for you in the years to come.