Tag for questions asking how to look after trees.

learn more… | top users | synonyms

2
votes
0answers
18 views

What are the limits to growing plants hydroponically?

I'm working with a group of artists, educators and engineers to develop new methods for STEM teaching in classrooms and museums. Right now, we are trying to design a room-sized model of the carbon ...
1
vote
0answers
34 views

Can these two trees be identified by photo.

I would like know what these tree are. They are located in San Diego county California. The trees may not be native. Thanks, Jon.
5
votes
1answer
51 views

Topping a Redwood Tree

Our redwood is about 30 years old and about 4 stories high. I would like to shape and top it to keep under control. Would it be fine to top off about 10 or 15 feet and also shape it? A tree trimmer ...
2
votes
2answers
47 views

How do I know if an ash tree can be treated for emerald ash borer or needs to be removed?

I have 16 Emerald ash trees that have been hit with the emerald ash borer. While I have seen the ash borer's bore holes and the epicormic sprouting of branches in random places, I question whether or ...
6
votes
2answers
223 views

What is happening to the leaves of my avocado?

I have an avocado plant in my outdoors balcony. It's been growing nicely, but there are small brown dots/holes in the leaves for some time now. I don't see anything in the underside of the leaves, and ...
0
votes
1answer
66 views

How do I prevent Ficus tree roots from invading other areas?

How far can I cut back the roots on my Ficus trees and maintain their life? Is this even possible? They are approximately 20 ft in height and 10 yrs old.
4
votes
1answer
91 views

What is wrong with my lemon tree? [duplicate]

Below is a picture of my lemon tree, which now have some sticky web infection. See left corner on the first picture. On the second picture is a close up of something that is being spread from the ...
1
vote
1answer
35 views

Does a birch clump need to be trained?

I planted a clump of three birch trees. Do the trunks need to be trained to get the desired spacing or angle as they grow?
4
votes
1answer
80 views

What are these red “quills” on my willow tree?

I just noticed several clusters of red "quills" which sort of look like small buds on the main trunk and the two largest lower branches on my weeping willow tree. The little growths are red and ...
3
votes
1answer
64 views

Did this saucer magnolia likely suffer a mortal wound?

This morning my wife told me that the landscapers for my townhouse complex hit a saucer magnolia tree on our property with their truck while doing their work. My wife said that the tree was knocked ...
3
votes
1answer
53 views

What determines the year-to-year growth in girth of any particular tree?

I'm growing some apple trees from seed and started this year. I'm worried that the width of their stems (or trunks, but they're too small to really call them "trunks") is too small in proportion to ...
3
votes
1answer
184 views

Holes in leaves of Yoshino Cherry

I have just started gardening. My first tree purchase was a Yoshino Cherry (Prunus y yedoensis Ivensii). After potting it into a larger pot, it has started to have lots of holes appear in the leaves. ...
0
votes
1answer
67 views

What is this plant with the prune tree?

I have planted a prune tree last year and today when I looked at it, I saw it was made of 2 kinds of plants. I am not even sure which one is which. So my questions are: What are these plants? Should ...
2
votes
1answer
328 views

What's causing the bark on my maple sapling to split?

I planted a Maple sapling in my front yard in November 2011, and it hasn't shown very much growth since. It gets leaves during the spring, but they seem to fall off earlier than all the other trees in ...
3
votes
1answer
93 views

Relocating an apple tree - when should this be done?

A long time ago (about ten years), I put some apple seeds in the ground, and now I have an apple tree. The only problem is that it is too close to the neighbour's house, and might do some damage to it ...
1
vote
1answer
92 views

How do I deal with a pine tree infestation?

My pine tree is heavily infested with some kind of white stuff. It looks like some kind of scales or white powder that is covering all the pine needles. Anyone know how to deal with this without ...
4
votes
2answers
216 views

What kind of palm tree is this and how do I care for it?

I bought a new house and have this palm tree in the front yard. No one lived in the house for over two years so it's been neglected but still looks healthy. What's the best way to clean it up and have ...
4
votes
2answers
722 views

Is there a way to save this half-dead evergreen tree?

I just moved into a home and this tree is planted in the yard. Half of it seems to be in good shape but the other half has no leaves and seems dead. I'm not sure what, if anything, I can do to save or ...
3
votes
1answer
77 views

How to best care for mature trees?

I've got several mature trees in my yard. I just moved into the home and for the last two years not a lot of care was given to the trees. As a first step I've removed all the trees that were scattered ...
1
vote
2answers
673 views

How can I rejuvenate a privet and hawthorn hedge?

I have a mixed hedge which is about 6 feet high. I think it is privet and hawthorn. Currently, it is very top heavy in terms of the growth, and it has a lot of bare stems lower down. Please see the ...
2
votes
2answers
489 views

When to repot a young juniper bonsai?

I live in an area of the United State where it's never really safe to say that winter is over. Just when you think it's spring, it can be blizzarding and below zero. Anyway, should I wait until it's ...
6
votes
1answer
917 views

what care should I give my lemon and orange tree after 8 months neglect?

In July I moved into a new house with an established lemon tree (about 4-5 m high) and orange tree (3-4 m high). Apart from collecting the last crop we have left them alone. The previous tenants grew ...
2
votes
1answer
349 views

Schefflera Arboricola (Umbrella Tree) in bad shape :(

I've had it for 7 years and in the last 2-3 months it has been losing all of its leaves. In an attempt to save what is left of it, I transplanted it today into a larger pot with fresh organic soil. i ...
5
votes
1answer
528 views

Pruning a mimosa

I have a mimosa and I have to prune it. I'd like to be less invasive and do this "operation" in the best way. Which is the best weather to prune mimosa? Which is the best time to do it?
4
votes
1answer
403 views

Is my tree bleeding to death?

Our builder planted this tree, and I have no idea what kind it is. The bark seems to split and a lot of sap runs out of the tree. Since I don't know what kind of tree this is, I haven't been able to ...
3
votes
4answers
153 views

During a heat wave, is it good to use an atomizer during daylight to spread water on the leaves of my Acer Palmatum?

I couldn't resist, I offered myself an Acer Palmatum one week ago. And now we face one of the hottest heat wave nowadays in Europe. I noticed some leaves are already dry, some of them are burnt. I ...
17
votes
6answers
21k views

Why do people paint some tree trunks white at the bottom?

I've seen trees with the lower trunks painted white in a number of places around the world but have never found a definite answer to why this is done. Some suggestions that I've heard are to make them ...
3
votes
1answer
264 views

oak tree white fuzz

Any idea what this is on my oak tree?? We are in the middle of a drought in central illinois and I've been seeing this on the back of my leaves.
4
votes
1answer
232 views

Is there a way to encourage needle re-growth in fir trees?

My wife bought a potted "Christmas Tree" last year in the week running up to Christmas. It wasn't in the best of shape when we got it and about a week after being inside the house, it shed the ...
4
votes
2answers
1k views

How to care for a large redwood?

I just bought a home in the CA bay area. My front yard is dominated by a large redwood tree that seems in good health. I really love the way it looks. By large I mean 5-6 stories in height, planted ...
5
votes
2answers
3k views

Are my autumn blaze maple trees dying?

We live in Oklahoma and planted some autumn blaze maple trees last fall. They seemed to come out of dormancy fine and the leaves were nice and green. We planted them in an area that stays pretty ...
2
votes
1answer
212 views

Chinaberry stump

I had a 30 ft chinaberry removed that the previous owner left for me, four months ago. It had multiple split trunks at the bottom that made every arborist that looked at it concerned, and it was ...
8
votes
2answers
216 views

What to do when an animal dies inside a hollow tree?

We have a beautiful Shag Bark Hickory next to the house with a large hole about 18' up. A family of raccoons moved in a few weeks ago and had a litter. Recently we've seen a lot of domestic ...
4
votes
2answers
176 views

How do I stop palm trees from sprouting from the side?

My 6-7 year-old outdoor date palm trees are growing side-sprouts, resulting in multiple trunks. How do I prevent this from happening?
4
votes
1answer
178 views

What are some recommendations for a potted orange tree?

My wife and I would like to have a potted orange tree. We live in the San Diego area so the climate for citrus trees is near perfect, but we don't know what kind of tree we should buy. Also, how large ...
1
vote
1answer
172 views

How can I make my seedling jacaranda recover

I've grown a jacaranda tree from seed a few months ago. It was developing ok until a few days ago when I found it in a really bad condition. I guess it was the cold weather (I'm in South America and ...
6
votes
3answers
12k views

How should I prune weeping willow?

I prune a lot of of neighborhood trees, but I've come to a small problem. Some people like their weeping willows high enough that they can walk underneath without brushing it. I had been doing this by ...
5
votes
2answers
661 views

Can I put a compost pile under a tree?

The most convenient spot for my new compost pile happens to be under a young apple tree. I would put it there, but I have a few questions first. Will I be able to make successful compost in heavy ...
5
votes
1answer
2k views

Are tar based products really useful in treating tree wounds?

There are a lot of articles on the web ranked highly in searches that advocate the use of tar/tar based products to seal tree wounds such as pruning cuts. For example — "Homemade tree wounds". ...
5
votes
1answer
127 views

Are lichens healthy for trees?

I've always thought lichens were neutral to tree health, and I think they are attractive, but someone recently told me to get rid of them, because they will cause rot and harbor disease. Do they ...
12
votes
3answers
6k views

How should a lemon tree with yellowing leaves, peeling bark, and small fruit be saved?

Our lovely lemon tree is in trouble... We live in Northern California. Starting mid-last summer our tree began yellowing. We've called an arborist out to the house but the advice has been pretty ...
8
votes
1answer
998 views

How can I determine which trees are unsafe in strong winds?

We had some fairly extreme weather in the UK, enough wind to blow over a tree. Luckily nobody was hurt as the trunk rested larger branches, narrowly missing the neighbours fence. The trunk and ...
8
votes
1answer
384 views

Should my spruce tree roots be covered?

This Norway spruce's roots have always been on top of the ground. The soil it is growing on is very hard white dry soil with a layer of decayed needles on top. It has been growing fine so far, but ...
4
votes
1answer
632 views

What is the best way to keep a tree growing straight?

When most trees get over ten feet tall, they seem to be trying to grow every way but up. Staking would be impractical because of scale, and pruning often helps but does not force the tree to grow up. ...
3
votes
1answer
300 views

How do I get rid of tar spots appearing on my maple's leaves?

Preliminary reading suggests that the only way is to rake up the fallen leaves and get rid of them. Will this do the trick? Is there a way I could keep the leaves for compost without propagating the ...
13
votes
1answer
2k views

How do I care for potted apple seedlings over the winter?

On a whim, this spring, I planted several apple seeds in a large pot just to see if they would grow. Two seedlings have come up and are very healthy looking, despite being munched by deer, and the ...
5
votes
1answer
313 views

Can I get rid of sap stains on my mulberry tree?

My mulberry tree was leaking sap earlier and it left ugly black stains down the trunk. The tree has deeply furrowed bark. Can I remove this?
7
votes
2answers
324 views

How do I care for grapefruit seedlings?

I got two tiny grapefruit seedlings for free and I don't know how to care for them. They are in very small pots and all the care they are getting is watering. They are 2" tall. I don't live in the ...
10
votes
3answers
370 views

What is a general rule of thumb for when to prune plants and trees?

It seems like every plant that I come across has a different (and seemingly random) best time to prune. Is there some sort of generally rule that I could apply to any plant and have a pretty good idea ...
5
votes
1answer
963 views

How do I care for a young fig tree?

I received a foot long rooted cutting of a fig tree that is hardy in zones 7-11. I have it in a clay base soil in the ground. It currently has two small leaves. I am completely ignorant of how to care ...