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Questions tagged [oak]

Tree or shrub, genus *Quercus* noted for lobed leaves and 'acorn' seeds.

1
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1answer
67 views

How do I harvest acorns from a Palestinian Oak (Quercus calliprinos) for planting?

I've got one of these growing by my house, and it's full of acorns. Some have fallen, but most are on the tree and are green (starting to turn brown at the end.) I want to grow a bunch of them for a ...
3
votes
1answer
42 views

Is this oak powdery mildew? How can I manage it?

I have just bought a new property that has a range of oak trees. Unfortunately, I noticed that some of the young trees in one area have a white discolouration of the leaves. After some searching ...
2
votes
2answers
63 views

Is this oak sick?

I have an oak that presents many ants on its bark, and I feel that its bark looks sick (even though I'm not an expert, so it's just a feeling). Furthermore, there is a big fungus at the trunk's base. ...
5
votes
1answer
218 views

Identify brown fungus growing on dead branches of an Escarpment Live Oak

I had a dead branch fall from one of my Escarpment Live Oaks in a storm yesterday. It has these brown mushroom-like growths on it. There are 4 or 5 growths like the one pictured on the 10-foot ...
3
votes
3answers
53 views

Oak Tree Seeding

A year and a half ago, during the last stages of autum, my five year old niece and I were going for a walk in our neighborhood. She began collecting acorns that had fallen on the ground and asked ...
4
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2answers
150 views

Japanese Maple Seedlings Dying For No Apparent Reason

I'm trying to grow Japanese Maples from Seeds. I had over 100 germinate this year and now I think they're all dead. One the seedling reaches an inch plus, it puts out true Japanese maple leaves. After ...
3
votes
2answers
427 views

What is this fungus/mushroom on my oak tree?

I've got an oak tree. Within the last 2-3 weeks I've observed two growths on the base of the tree that started from nothing to what you see below. They're a fungus or mushroom of some sort. They're ...
5
votes
1answer
156 views

Did we somehow accidentally plant an oak tree on our balcony?

My wife had a poinsettia on our balcony that died in a surprise frost while we were away. The empty pot stayed on our balcony for a while, and new sprouts gave her hope that it had managed to survive ...
5
votes
1answer
110 views

What's wrong with my Scarlet Oak tree?

My poor Scarlet Oak (Quercus coccinea) tree started getting brown/yellow leaves with holes in them. Any ideas as to what the problem is? It's been really dry and the tree is less than one year old in ...
6
votes
1answer
88 views

Powdery mildew on oak (Erysiphe alphitoides?)

I have an oak (Quercus robur) sapling I've grown from seed in a pot (it is 2 years old) and its leaves are exhibiting a powdery white mildew. After some searching online I think it's a case of ...
6
votes
1answer
796 views

Are Oak leaves good for making mulch?

I live in southern Arizona and we have four varieties of Oaks here that lose their leaves in the springtime as opposed to the fall. I know one species is called Emory and another the Arizona White. ...
4
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3answers
4k views

How can I tell the difference between male and female trees?

How do you know what a male tree looks like from the female? Is it because of the leaves that fall or the ones that have more pollen? Please help me to understand if there is such a thing.
4
votes
1answer
206 views

Growing bur oak from stored seeds - how to start?

I was given a bag of bur oak seeds that were collected from my region (northeast USA, zone 5) last May (it's been a while). I found them stashed in a wooden drawer in a cool room, in their original ...
3
votes
3answers
85 views

What tree will grow acorns quickly?

I want an acorn tree I do not have to wait till I'm dead to see it produce acorns. I have been disgusted talking with nurseries all day long. I am 56 and I want to have an acorn tree. Below are some I ...
4
votes
1answer
495 views

What is this white fungus on my oak tree?

This white material is on my oak tree, and it's appeared within the last month. What is it, how can I treat it, and is it contagious (it's begun to fall from the tall oak tree onto surrounding plants)?...
7
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2answers
441 views

What kind of oak are these acorns from?

Can anyone identify the oak species these acorns come from? Here are some pics of the leaves and bark
7
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2answers
357 views

Is it possible to get this pin oak to grow straight?

Received a pin oak from my uncle a little less than two years ago as a transplant. It's about 9ft tall today. The tree had a noticeable bend to it when when it was transplanted. I tried staking it, ...
5
votes
2answers
544 views

When to collect acorns for planting?

I would like to try growing some oak trees from acorns. When should I collect acorns for this? Should I pick them as soon as they appear on the tree? Or leave them a while to 'ripen', or change ...
2
votes
4answers
2k views

How can I transplant this large oak tree?

A few streets away, the homeowner said that if I can dig up and move the oak tree pictured below then it is mine. I would love to have this tree in my yard. I'm not sure if you can tell from the ...
6
votes
1answer
356 views

How can I grow an in-ground 'bonsai' oak tree?

My question is a bit different because I'm leaving the oak tree in the ground where it started growing about 5 or so years ago. I've been trying to keep it cut back each year to try to make it into ...
5
votes
2answers
62 views

Self seeded oak sprouts, want to safely relocate to see if they will take

I have several self seeded oak sprouts under our pine trees. I know they can't stay there at the roots of the large pines. But want to see if the tree sprouts will grow we have 2 1/2 acres & would ...
3
votes
1answer
358 views

What is causing the open hole and damage to this oak tree?

There is a water oak tree in my yard, which is a member of the red oak family. There seems to be some sort of insect burrowing holes into the tree at the darkest spot. Tannins are being washed down ...
3
votes
1answer
225 views

What should I do after oak tree removal, before paving?

I recently had a huge oak tree removed. It was ground to a stump. I'm going to pave that area soon. Do I need to do anything to the area before paving? Someone told me to put salt in the soil.
5
votes
1answer
199 views

Suckers on dormant tree

My oak appears to be dormant. I am in Cape Town, its winter and around 6- 14°C overnight. My oak tree sprouted 8 suckers and they are growing strong. Why would the tree not sprout from the trunk or ...
4
votes
1answer
152 views

Oak Leaf Blister (Taphrina caerulescens)

I'm pretty certain my oak has Taphrina caerulescens symptoms. There is yellow bulbs on it since the beginning of the summer. Can it endanger the tree health? How can it be cured?
9
votes
3answers
598 views

How should I save an oak tree wounded by ground root removal?

I had somebody remove some oak tree roots from the ground one month ago. Now a couple of branches look dried. Others have no new leaves growing and the old leaves are dropping. This is in Houston, ...
4
votes
3answers
137 views

How do I perk up a Gray Oak I just planted whose leaves are turning yellow and brown?

I planted a container-grown Gray Oak tree in my yard last weekend, and it isn't looking very happy so far. Its leaves are turning yellow and then brown around the edges. The Gray Oak is supposed to be ...
3
votes
1answer
265 views

How can I bonsai a pin oak?

I have a small pin oak in a small pot thriving since spring in Brooklyn. I would like to keep it and I am thinking about bonsai. I think I need to keep it outside for two years? Should I give it a ...
8
votes
2answers
493 views

How can I compost oak leaves and sawdust?

I have the enviable problem of having several (6 or 7) cubic yards of both oak leaves and oak sawdust from having logged off and making cabinet lumber from many oak trees that once grew where our ...
4
votes
1answer
84 views

Transplanting an oak that has rooted through bottom of a pot

I need to move an oak tree that has rooted through the bottom of the pot and stands about 8-10 feet tall. It is way too close to the house and must be moved. I know this should be attempted in its ...
6
votes
2answers
59 views

Should I use a mycorrhizal inoculant when transplanting 4.5" caliper white oaks?

The site is on the east end of Long Island. Zone 6b. It is actually a re-vegetation of a forested area from which we removed over 40 mature pitch pines that had succumbed to some pine beetle. There ...
3
votes
1answer
631 views

What equipment do I need to transplant a 20' tall pin oak?

I knew a guy who moved 7 or 8 large (for moving) 20-35' pin oaks. He used a backhoe, digging out around the rootball, while leaving it intact. While this was successful, and the trees did very well, ...
4
votes
1answer
444 views

Is it important to deal with gall wasps on oak trees? If so, what is the best method?

Gall wasps are a common problem here on the east end of Long Island. Oaks are a dominant species around here, and many clients rely on them for shade around their houses and yards. What should be done ...
5
votes
3answers
4k views

How do I remove oak seedlings which sprouted in my garden?

I have an oak tree at the bottom of my garden and it has produced small trees due to fallen acorns in the grass. I need to remove them. How do I do that?
5
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1answer
1k views

What conditions cause trunk sprouts on oak trees?

I asked a similar question here, but something annoying is catching my attention. Almost all of the pin oak trees in my area are sprouting up and down the trunks like crazy this spring, many of them ...
7
votes
2answers
438 views

Oak tree - arborist says needs to be removed?

I have a very nice oak tree in my backyard that is about 100-150 years old. The tree is in a good visual shape and we trim it about every two years. However, there is a wound on tree's stem, about 25 ...
3
votes
1answer
154 views

How should I transfer swamp oak seedlings from pot to ground?

I have an interesting project going on. I was visiting the 911 Memorial site in NYC last fall. There are many swamp oaks planted on the grounds, and in the footprint of where the twin towers stood. ...
2
votes
1answer
669 views

Should I leave my bonsai oak tree outdoors during winter?

I live in southern Sweden, where temperatures can get down to around 20C / 4F in the winter. Any tree grown outdoors is exposed to quite a lot of darkness and cold from around early November to late ...
5
votes
1answer
756 views

What is this white fuzz on my oak tree?

Do you have 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.
11
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1answer
1k views

Are acorns, or oak nuts, edible?

I have a lot of oak trees where I live, and I've heard that acorns are edible, although not particularly tasty. Is it true? To be honest I have only tried a minimal amount, too little to make any ...
17
votes
1answer
7k views

How do I start an oak tree from an acorn?

I have a lot of acorns on my lawn from a red oak tree. I would like to start a new tree from an acorn and I was wondering what I can do to ensure success. What should I look for in an acorn, for ...
8
votes
2answers
14k views

How do I keep oak trees from sprouting?

I have a lot of nice sized oak trees. I have pin, black, and chestnut. Every once in a while one of them puts out sprouts all over the trunk and starts looking like a green pillar. How do I keep that ...
11
votes
1answer
507 views

What is this anomalous growth on my oak leaf?

I found an interesting lesion on an oak leaf in my back yard (Upstate South Carolina). What is it? I am asking about the marble like structure since I am fairly certain that the larva (shown at link) ...
17
votes
10answers
22k views

What can you do with oak leaves within a garden? Are they compostable?

We have a lot of oak trees on our property. Is there anything we can do with the oak leaves? They never really seem to break down, and because of that, I am afraid to try and add them to a compost. ...