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10 votes
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How does tree sap go up

You're right in that an element of capillary action is involved in the process. The usual explanation for how fluids flow through xylem tissue is to do with the interconnected process of transpiration....
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10 votes
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Will a 1/2" tap hole injure a maple tree?

All tap holes injure maple trees. Extensive research into spile-hole damage (with an eye to reducing it, and preserving productivity) is precisely what has driven the downsizing of spiles. Few ...
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6 votes
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Why is my basil plant oozing brown sap?

It looks like a scale infestation. Unfortunately, Basil, being an edible plant, isn't that easy to treat because you can't use heavy duty insecticides, so its probably best to dip a cotton bud or ...
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5 votes
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Can I get rid of sap stains on my mulberry tree?

That leaking sap & stained bark appears to be caused by bacterial wetwood, also known as slime flux. This is a common bacterial infection that creates slightly caustic sap & raises pressure ...
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5 votes

What does Mesquite Tree sap have that possibly makes it a good fertilizer for dragon fruit?

I would agree with @Grady, but also add that mesquites are legumes. My understanding is that fixed nitrogen in the root nodules will remain there until the tree dies, so it is unlikely to be that. ...
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5 votes

What does Mesquite Tree sap have that possibly makes it a good fertilizer for dragon fruit?

...maybe, it is possible that the sap is feeding mycorrhizal fungi, that are making more nutrients available, or there is some nutrient freely available in the sap, or maybe it is just shade... but ...
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4 votes

Is it normal for palm trees to drip a brown gummy sap?

The only cause of dripping 'gummy' stuff is usually an infestation or bacterial infection. Pest infestation such as Palm Scale particularly can cause dripping of sticky stuff, but if the dripping is ...
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4 votes

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

Prune the tree at the correct time of the year for that type of tree to avoid the stain from a leaking wound. Over several years the stain does go away as the wound heals closing the leak. It's not ...
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3 votes

How do I remove sticky palm sap from the household fixtures around it?

Check the palm thoroughly, sounds as if its got an infestation of either mealybug, scale insect or a heavy crop of aphids. These all produce honeydew, and that is very sticky indeed, and may be what's ...
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3 votes
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Heavy sap weeping at base of stone fruit tree

It's unfortunate that this is happening at the base of the tree - its called Gummosis or sometimes Canker and is very common on stone fruits. Often, the gummosis leads to a bacterial infection which ...
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3 votes

What does Mesquite Tree sap have that possibly makes it a good fertilizer for dragon fruit?

Your mesquite tree shouldn't really be constantly dripping sap - if the sap it is producing turns black or becomes smelly, it would indicate slime flux, a bacterial infection which sets in where sap ...
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3 votes

How does tree sap go up

Trees used to be able to grow much much taller than they've been able to for the past couple of millennia. I was finally able to locate a decent article which explains in detail the reasons for ...
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3 votes

Oil/sap from the trees

You are correct! You've got soft bodied insects that suck from the plants. Could be a number of types; aphids, white fly, etc. The sticky stuff is honeydew...the excrement from insects sucking on ...
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2 votes
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Large excretion of sap from Austrian Pine

This is normal. You do not have anything to worry about. The vascular system is working. Pines are full of sap. Maples full of syrup. Milkweed full of milky sap. Unless you see any other signs ...
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1 vote
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Trailing vinca....sap?

Aha - that's a clearer image, and under magnification, clearly shows a scale insect infestation- that's what the brown bumps are, image/info here http://homesteadbrooklyn.com/all/2017/1/17/common-...
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1 vote

Trailing vinca....sap?

Hmm, odd. There is a phenomenon called guttation which happens when the plant is in particular environmental conditions (see https://en.wikipedia.org/wiki/Guttation); this seems to fit the fact that ...
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1 vote

Removing hawthorn sap from cars

Not really a gardening question, but hey, its vaguely related! Hand sanitiser used neat is the best, doesn't damage your paintwork, probably requires a bit of elbow grease if the sap's been there a ...
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1 vote

Maple Tree Question

I think it is a black or sugar maple. I think syrup depends more on the temperatures , not the type of maple. I made syrup 2 years from silver maples in the Chicago area. I made a couple quarts from 2 ...
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1 vote

Maple Tree Question

I do believe this tree can be tapped for syrup. Acer rubrum. Red Maple Let's wait until others have had a chance to concur or negate.
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