We have a tree (eucalyptus we think) and there is a twist in the trunk and the bark is gradually flaking off the base of the tree and moving up the tree. Is there any treatment to save it? Should we cut off the large branched section where the disease seems to be moving?
Eucalyptus is an unusual tree so the normal expectations don't necessarily apply. Peeling bark is normal for this tree. The twist doesn't concern me. I'm more interested in what the leaves tell you about the tree. If they are healthy looking, you probably just face the unusual characteristics of Eucalyptus. https://www.gardeningknowhow.com/ornamental/trees/eucalyptus/peeling-bark-on-eucalyptus.htm
You list those types of Eucalyptus seeds that need cold preparation to propagate. Can I use that method with any Eucalyptus seeds since the ID of the one I want to use might be difficult.
This article will help you.
https://www.gardeningknowhow.com/ornamental/trees/eucalyptus/propagating-eucalyptus-plants.htm
Eucalyptus tree roots - will they still keep growing after the tree has been cut down. Our neighbour had a eucalyptus tree in his garden less than 50 feet from our house, but has recently cut it down. Will the roots continue to grow & if so should we have root barrier put in along our garden boundary? The tree was about 25-30 feet tall when cut down. We live in England, UK. Please advise. Thank you.
It will not be common for these to come back after cutting down completely, but there is still always a chance. Most professional tree services will ensure that there will be nothing growing back, but depending on their skill level, the tree could still come back.
If you are ever in doubt, a barrier will always be a good idea.
Why does the trunk on my eucalyptus tree stay skinny (about 1" in diameter) and does not fatten up. It had grown to 8' and after 2 seasons I trimmed the top about 1 foot hoping to fatten the trunk. Is something wrong?
Avoid high Nitrogen fertilization which tends to stimulate height and not trunk caliper (diameter). Use a balanced fertilizer with NPK numbers under 10, preferably an organic slow release product like this:
https://www.domyown.com/dr-earth-organic-all-purpose-fertilizer-p-9485.html
The Calcium, Magnesium and Sulfur and other nutrients content is important for balanced growth and you don't always get that with chemical fertilizers.
Stake the tree loosely so that it can move around a little and not be strapped tightly to the stake. The movement will help to develop caliper and standing strength. I use the two or three stakes method and tie loosely so that the trunk can move but not bang or rub on the stakes.
http://m.espacepourlavie.ca/en/staking-tree
Don't strip off lower growth that develops along the trunk; you can shorten branches that will eventually be removed, but allowing "temporary branches" on the lower trunk now will help develop caliper.
Hope that helps, Don
Can a rainbow eucalyptus tree be dwarfed, similar to the bonsai process ?
This can be done, although it is a bit tricky. The first few years will be relatively easy, but after you will require some root and top pruning. I would only advise cutting off 1/3 of the roots at the bottom so you do not kill the tree. Dolomitic lime will be your best friend in container, as it keeps the pH stable, as well as providing calcium and magnesium. These are two very common deficiencies in contain.
Here is an article that will help: https://www.gardeningknowhow.com/ornamental/trees/eucalyptus/eucalyptus-houseplants.htm
Hello, I have 3 eucalyptus trees that I had out all summer. I have them in the basement with a grow light and the leaves are all dry. The bark still seems alive and green. I was wondering if it is dormant? Died? How can I ensure that they have not died and can still be saved? Thanks, Arturo
When you bring these inside, they will need much less watering. It is necessary to let them dry out a little between waterings. It is a common symptom of infection with necrosis that fast. I would add a little wettable sulfur and dolomitic lime to the next watering. You may even want a fan on them to get air circulated. The wattage of your lamps may be too high, or even could be that the lamps are too close to the trees. I would monitor the temperature to make sure it doesn't get too hot, or too cold. Here is an article that will help: https://www.gardeningknowhow.com/ornamental/trees/eucalyptus/eucalyptus-houseplants.htm
In the last 4 months I noted bark coming loose from trunk. A while later it started to fall off exposing some red/ black weepy looking patches going up the trunk; some branches at this stage had started to lose leaves and some small branches died. Approx 3 months ago we removed some soil around base as we found ants nesting there and obviously interested in the oozing matter. We treated the ants. Since then some branches have put out new growth and is at present showing buds forming. Though another branch is showing more red/black matter appearing. What product and other action can I use to attempt to control problem’? I can take photo and email direct or as message. Thank you Kind regards Kay
It appears that you have an "ironbark", like Eucalyptus sideroxylon or possibly another species.
The bark peeling can be natural shedding as the inner bark develops and the outer bark peels off, or it can be due to an injury.
The red substance is also a natural, oxidized sweet sap exudation and is called "kino". It dries dark red or black. The ants will be attracted to feeding on the sweet kino.
Unless there is wounding that compromises the structural integrity of the tree, or pest activity other than the ants, then this should not be considered a disease condition, but rather the tree's natural defense mechanism and exudation of protective substance.