I live in Zone 7-8. My brugmansias were outside on my deck. They were dropping their leaves which had yellowed. I went to cut them back and take them into the garage to winter over and found out they were trying to bloom. I brought them into the screened porch where the buds are growing and I have one flower almost 6 inches long. They, however, are still dropping their leaves and there is not very much light where they are. Should I let them bloom, or cut them back and wait till next year? Any help would be appreciated.
I would go ahead and put them into dormancy. They do tend to try for a last flowering right at this time, so this is not unusual, but they will be happier in the long run if you just cut them back and let the leaves drop.
We had an unexpected frost last night and my brugmansia is now all wilted from the frost. The tree is in the ground and cannot be moved unless we dig it up. What can I do? Can I cut the tree back and mulch the base? Please help!
The tree will look unsightly for awhile, but it will regrow its leaves with no extra care as long as the stems and branches are still green. You should see new leaf buds develop where the old leaves were in about 1-2 weeks.
What is the correct time of year to trim back the brugmansia?
Mid to late spring is best, but brugs can take pruning just about any time. This article will help: https://www.gardeningknowhow.com/ornamental/trees/brugmansia/prune-brugmansia-trees.htm
brugmansia in Minnesota indoors, 65-70 temp, very leggy, 2nd year, leaves only on top of stems, watered regulary, can i prune them now? or leave them and they'll bloom better this summer?
I would leave them for now and prune them in the early spring (pruning is best done in either late fall or early spring). This will result in a bushy and full plant in the summer with lots of blooms. In the future, you may want to consider letting your brug go dormant in the winter. They just don't look all that nice indoors as they really try to go into dormancy, so it easier just to allow them to do that. Here is information on doing that:
https://www.gardeningknowhow.com/ornamental/trees/brugmansia/brugmansia-winter-care-wintering-brugmansia-in-your-home.htm
I have purchased several Brugmansias and want to grow them in pots. I live in Sydney, so the weather is reasonably clement (mild) in winter. They are in large pots, two feet wide and deep. How long can they remain in this size pot? When do they flower? Do I cut off the flowers when they die? I also have three cuttings with roots (recently acquired) and was wondering how long they will take to grow leaves.
The following articles should be of some help to you:
https://www.gardeningknowhow.com/ornamental/trees/brugmansia/growing-brugmansias-in-containers.htm
https://www.gardeningknowhow.com/ornamental/trees/brugmansia/tips-for-propagating-brugmansia.htm
https://www.gardeningknowhow.com/ornamental/trees/brugmansia/getting-your-brugmansia-to-bloom-and-produce-blossoms.htm
Can you please tell me how to prevent bugs from attacking the above plants? Last year all the leaves on our plants seem to have developed rust-like spots that attacked most of the plants. They did flower, but we're not sure what was attacking the leaves.
I would treat the plants with neem oil. It will kill both any bugs or fungus that attack the plant and it is safe for people, pets and beneficial bugs. Here is more information:
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm
I grew Brugmansias last summer for the first time. I brought them into the house where they continued to flower for several weeks. They started dropping the flower buds and leaves, so I cut them back to about 3 feet in height, leaving about 6 inches above the first Y. I kept them in a dark, cold basement (about 45-49 degrees) over the winter where they tended to dry out and the branches started to shrivel up. I increased the amount of water I gave them. I moved them upstairs in a southern window and started watering a month ago. The stems still seem to be shriveling more and they are hollow. I do not see any signs of growth. Did they not make it? Lower stems, which are over an inch across on some of them, look really green. Just wondering if I should cut them down to the ground or leave them a while longer.
If the lower stems are green and firm, then they will grow new branches from those stems. Just give them a little time. If the Y died, you will simply have a bush form instead of a tree form.