第1770期:Strange Green Growths on Your Tree? Fear Not!

Have you ever seen a tree covered in parts with green growth and wondered what it was? Were you concerned that the spreading green life might hurt the tree? Well, no need to worry. Those growths could be lichens, moss or algae, and none of them threaten the tree’s health. They are not parasites.

你有没有见过一棵树的一部分长满绿色植物，想知道它是什么？你担心蔓延的绿色生命会伤害到树吗？好吧，不用担心。这些生长物可能是地衣、苔藓或藻类，它们都不会威胁到树木的健康。它们不是寄生虫。

Lichens are symbiotic organisms of fungi, algae and possibly yeast. The organisms spread on the tree but they do not live off it. They live off each other. And, they all favor trees that are sick or growing in poor conditions. The growth usually presents as pale green or gray, but sometimes even orange. The growth is normally crusty or leafy masses on tree branches and trunks. The growth of lichens is actually a sign of good environmental health as they will not survive in polluted areas. If lichens are present, the air quality in the area must be good.

地衣是真菌、藻类和可能的酵母的共生生物。这些生物散布在树上，但它们并不靠树为生。他们靠彼此生活。而且，他们都喜欢生病或生长在恶劣条件下的树木。生长物通常呈淡绿色或灰色，但有时甚至呈橙色。生长通常是树枝和树干上的硬皮或多叶团块。地衣的生长实际上是良好环境健康的标志，因为它们无法在受污染的地区生存。如果存在地衣，则该地区的空气质量一定很好。

But it also tells you that the tree was sick enough to appeal to lichens. So, you might want to give the tree some extra healing care. Water the tree, aerate the soil around it, and place mulch along the root zone. The area begins 10 centimeters away from the trunk. It extends as far as the branches above reach out.

但它也告诉你这棵树病得够吸引地衣了。所以，你可能想给这棵树一些额外的治疗护理。给树浇水，给周围的土壤通气，并沿着根区覆盖。该区域从距离躯干 10 厘米处开始。它延伸到上面的树枝伸出的地方。

Moss is another non-parasitic organism that thrives in wettish conditions and grows on trees, among other things. It likes shady areas. Moss grows in green or yellow mats. It favors low soil fertility, acidic pH levels and dense soil. In most cases, moss growth is harmless. But if the growth becomes very large, its weight could damage branches. To limit moss growth on a tree, remove branches in the center of the canopy. This will permit more sunlight and better airflow. You can also gently scrape the moss off the tree. You can also remove it with a chemical that kills fungi.

苔藓是另一种非寄生生物，它在潮湿的环境中茁壮成长，并生长在树上等。它喜欢阴凉的地方。苔藓生长在绿色或黄色垫子中。它有利于低土壤肥力、酸性 pH 值和致密土壤。在大多数情况下，苔藓的生长是无害的。但如果生长变得非常大，它的重量可能会损坏树枝。要限制树上苔藓的生长，请移除树冠中央的树枝。这将允许更多的阳光和更好的气流。你也可以轻轻地刮掉树上的苔藓。您也可以使用杀死真菌的化学物质将其去除。

Algae is usually considered a water plant. However, it can also grow on trees, paths, roofs, fences and houses. Like moss, it likes shade and some wetness. Algae’s green or orange covering can be washed away with a powerful water hose. You can also create a wash solution that can slow algae growth. Mix about 30 milliliters of chlorine bleach or white vinegar with about 3.7 liters of water. Apply the solution directly on the algae. It is not necessary to remove algae from trees. But, you can if you want. Just spray affected areas with five grams of copper sulfate mixed into 30 milliliters of water. The algae will likely regrow in the area, however, if shady, wettish conditions remain in place.

藻类通常被认为是一种水生植物。然而，它也可以生长在树木、小径、屋顶、栅栏和房屋上。像苔藓一样，它喜欢阴凉和潮湿。藻类的绿色或橙色覆盖物可以用强力水管冲洗掉。您还可以制作一种可以减缓藻类生长的洗涤液。将约 30 毫升氯漂白剂或白醋与约 3.7 升水混合。将溶液直接涂在藻类上。没有必要从树上去除藻类。但是，如果你愿意，你可以。只需将 5 克硫酸铜混合到 30 毫升水中，喷洒受影响的区域即可。然而，如果阴凉潮湿的条件仍然存在，藻类可能会在该地区重新生长。