I live in N. Ireland and have grown in my garden a palm tree (I think this is what it is) which I bought as a young plant in Torquay (UK). It has grown fine for over 20 years but recently the leaves are falling off in heavly clumps. This has never happened before and I assume it may be caused by the heavy snow and cold tempertures we have experienced over the winter. I noticed some trees locally being pruned very heavily, almost removing part of the trunk at the top. Is this what I need to do?
Indeed, the snow is likely damaging it. I would recommend pruning away any dead leaves and only that. The other tree you are seeing may have lost all their leaves and this is why you are seeing such extreme pruning. If you are expecting more snow and cold, these articles will help you protect it from further harm: https://www.gardeningknowhow.com/plant-problems/environmental/frost-how-to-protect-your-plants.htm, https://www.gardeningknowhow.com/plant-problems/environmental/protect-plants-in-freeze.htm
I have a 25 year old palm tree my husband bought in the Isle of Man as a baby. It is well over 10 to 12 foot high with at least 3 arms and I think this winter has taken its toll, as most of the palm leaves have dropped off. I have seen quite a few palm trees in neighbors' gardens have gone the same way. Do you think it will have died in the cold, windy winter we have just had? Or would it rejuvenate itself now the weather has got a little warmer? It would be such a pity to lose it.
It is hard to say how well they will grow back. Most palms do not deal well with lost fronds, but they have been known to recover fine. These articles will help you: https://www.gardeningknowhow.com/plant-problems/environmental/how-to-tell-if-a-plant-is-dead-and-how-to-recover-an-almost-dead-plant.htm, https://www.gardeningknowhow.com/plant-problems/environmental/tips-for-saving-cold-damaged-plants.htm
My cold hardy palm has white and rust spots. Some of the palms are starting to die. I have been treating it with a fungus and rust spray and it is not working. Do you have any suggestions with this problem?
It is likely palm scale. Neem oil is a good treatment. These articles should help: https://www.gardeningknowhow.com/plant-problems/pests/scale-bug-how-to-control-plant-scale.htm, https://www.gardeningknowhow.com/houseplants/palms/sticky-palm-tree-leaves-treatment-for-palm-scale.htm, https://www.gardeningknowhow.com/ornamental/trees/sago-palm/white-spots-on-sago.htm (treatment would apply to your palm as well)
I have a tall full palm that I moved outside for one 24 hour period (a covered deck). Today it looks 'wilted' - the fullness of the leaves have all consistently drooped. Should I move it back inside?
This happens when you bring indoor plants outside without acclimating them. It should recover, but in the future, here are some directions on how to acclimate it: https://www.gardeningknowhow.com/houseplants/hpgen/move-houseplant-outside.htm
I have 6 potted palm trees that did beautifully this summer here in New Jersey. This is the second winter I have had them. Last winter I kept them in a SE facing porch room (unheated) with an electric space heater on a timer. The room has temporary plexiglass panels over the screening to keep out the wind. In the spring once we passed frost, I took them outside. They took a while to show life/growth but did. What can I do better this winter? I don't have any other space to put them that would be better.
Palms need, in general, to stay in temps above 45F, so if you can keep your space at least that warm, that might help.
Also, adding more light might help. You might install some supplemental light in the form of fluorescents, maybe an inexpensive 2-tube fixture for each palm, with one cool white and one warm white in each , installed above each plant. This article has more information: https://www.gardeningknowhow.com/houseplants/hpgen/fluorescent-lighting-for-indoor-gardening.htm
Another important point is to reduce watering. Test the soil deep inside the pot - an electronic moisture meter works well. The soil should be allowed to reach the slightly damp stage, about halfway between dry and moist on the meter, a little closer to the dry side is best.
It's December and I came back to my plants having brown leaves and looking to be dead. What do I do to winterize them and save them?
Winterizing refers to how to protect plants from winter cold before it happens. If your palms have already been hit by cold so that the leaves are brown, winterizing won't change that. The only thing you can do is try to protect the growing tip inside the leaf cluster; if it is not killed, the palm will put out new leaves in the spring. Although this article is about sagos, which of course are not palms, the principle is the same. Check it out for some suggestions: https://www.gardeningknowhow.com/ornamental/trees/sago-palm/sago-winter-care.htm
You might also want to look into planting palms that are winter hardy in your area, or putting the less hardy ones in pots that can be brought indoors for the winter. The county extension service could be of help. This link will help you find the nearest office:
https://www.gardeningknowhow.com/garden-how-to/info/what-is-extension-service.htm
I keep the brown branches trimmed but it seems like new ones don't come as quickly.
Is this an indoor or outdoor Palm?
Always start with the basics first. Adequate water, light, soil conditions. Always check your plant carefully for signs of insects, bugs or disease.
Lower leaf die out can be normal process.
Here are some links for you.
https://www.gardeningknowhow.com/ornamental/trees/palms-trees/fraying-shedding-palm-fronds.htm
https://www.gardeningknowhow.com/houseplants/palms/growing-palms-indoors.htm