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10 votes
Accepted

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....
Bamboo's user avatar
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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 ...
Bamboo's user avatar
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5 votes
Accepted

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 ...
waded's user avatar
  • 66
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 ...
stormy's user avatar
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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 ...
stormy's user avatar
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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 ...
stormy's user avatar
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1 vote

How does sap flow relate to angle of stem/branch?

It turns out that IS factual and the science to back it up is as follows: We know that sap flow happens because of capillary action inside the plant's capillaries. Capillary action works optimally in ...
Jimbo's user avatar
  • 131
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-...
Bamboo's user avatar
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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 ...
Colin Beckingham's user avatar
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 ...
Bamboo's user avatar
  • 133k
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 ...
blacksmith37's user avatar
  • 8,704
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.
stormy's user avatar
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