It seems that whenever I see a tree that has had parts cut off of it, the stub is black, or a trail of black comes from it down towards the ground. Almost as if it was burned.
2006-09-08 12:37:19 · 136 answers · asked by Dani 2 in Science & Mathematics ➔ Botany
A tree has a sap analogous to the blood which circulates in its phloem. Such sap is composed of oil,and other substances. When its branch is cut off then the injured part "bleeds" and undergoes oxygenation processes which turns the sap color darker. The gas in the sap evaporates and dries and hardened with some leaving resins on the "healing" injured part which leaves a dark scar as the layers or surface of the cut part had some dead tissues. It is its dead part which underwent several processes in its "trauma" experienced which you can see as burned looking.
2006-09-09 01:48:08 · answer #1 · answered by ♥ lani s 7 · 4⤊ 3⤋
When you cut your finger - doesn't it bleed? Depending upon the kind of tree it is - it might just be the sap that's in there - but, being as you said it was black - uuuuuhhh - that's kind of weird - if you know what kind of a tree it is - look it up on the net and get some info on it - otherwise I'd go to a gardening place and ask them. Pretty interesting - now I'm curious about a tree that has black sap. Anyway - hope this (might) help??
2006-09-10 10:22:03 · answer #2 · answered by You'llneverguess 4 · 0⤊ 0⤋
I am an orchardist. What you see seeping out of the tree where the branch is cut is tree sap. Depending on the species of the tree, it will be almost clear or an amber color (conifers) and in other cases it will be black when it comes in contact with the air. This is most common in some of the hardwood species such as oak and hickory. Sometimes tree pruning specialists will apply pruning paint. This is a tar-like substance that seals the tree wound to prevent tree pests and fungus from damaging the tree.
2006-09-09 18:35:35 · answer #3 · answered by redeaglesoaring2004 2 · 1⤊ 0⤋
Tree's and plants are living things, some trre's have sap and some don't, the ones you seem to be cutting and pruining have sap check around at a nursery or garden shop for tree limb sealants after you prune or cut the tree limbs seal the area the sealant the sealant acts like a bandage for them and blocks out bugs and tree diesase.
2006-09-10 01:19:30 · answer #4 · answered by Mary S 3 · 0⤊ 0⤋
The black stuff on some trees is the "sap" in the tree. It will run like that after a tree has to be trimmed. Thats why they recommend that you trim your trees when the "sap" is down in the truck of the tree, so you won't harm the tree. The cut where a limb used to be, at the wrong time of year can allow disease and bugs in and harm the tree.
2006-09-09 16:57:10 · answer #5 · answered by Anonymous · 1⤊ 1⤋
It's called sap & it's the life's blood of the tree. The stump where
the cut was made is supposed to be sealed in order to prevent it from leaking & from either insects or infection from entering the tree through the cut; either of those can kill an otherwise healthy
tree very quickly. The sap rises in the spring, which is what causes the tree to bloom & leaf out - it sinks in the fall, which is why the leaves turn colors & the trees shed their foliage. Did you never take biology or Earth sciences?
2006-09-11 06:38:29 · answer #6 · answered by pumpkin 6 · 0⤊ 0⤋
That is called bleeding,and the sap is running out.Just like you'd do if someone cut one of ur limbs off.Trees should not be pruned when the sap is up during the spring or summer.When the leaves fall, the sap is going down and the best time to prune a tree is when the leaves all fall off.
2006-09-09 12:20:20 · answer #7 · answered by hkrissi 2 · 1⤊ 1⤋
trees are alive, and like humans when cut they seep. Either make a mud mixture with water and rub it on the cut, or use a specially made concoction (black stuff like tar) that you can buy at Home Depot and that will prevent the tree from getting diseased or have bugs enter into the tree.
2006-09-10 18:27:38 · answer #8 · answered by sophieb 7 · 0⤊ 0⤋
When a branch is cut off, sap leaks from the tree. The wounded tree needs to be sealed with tar immediately to prevent insects and woodpeckers from invading and doing other permanent damage.
2006-09-10 04:41:07 · answer #9 · answered by Anonymous · 1⤊ 0⤋
Alot of trees & plants bleed sap when they're cut (particularly if they're trimmed at the wrong time of year). Remember- a tree is a LIVING thing, -& you'd "seep" red stuff pretty good too- if someone cut a "branch" off of YOU! The concept is really not THAT different.
2006-09-09 18:06:29 · answer #10 · answered by Joseph, II 7 · 0⤊ 1⤋
When the branch is cut off,be it a limb it is cut from, or the trunk, the tree will "bleed" sap. This creates a protective barrier, much like the human body creates a scab over an abrasion. Over time, dirt, and dust will stick to the sap, and often naturally occurring mold will take root in the sap. This gives it the dark color.
2006-09-09 02:16:18 · answer #11 · answered by Robster01 3 · 2⤊ 1⤋