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I have bought a Kalanchoe and it was healthy when I bought it. I have four more plants with the same problem (all purchased from a place like ikea in Ecuador). I wonder if it is a fungus, and how to fight it.

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    Is the soil in the pot very wet? How often do you water and is there a tray underneath the pot? – Bamboo May 14 '16 at 11:22
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Sure, fungus/virus/bacteria, brought on by too much water and/or not enough light.

Diagnostic signs:

  • usually on the older growth
  • sunken spots on the leaf that start brown and go black
  • sometimes in thinner leaves you will see a light dark spot in the centre surrounded by lighter tissue with a thin line between the two. This is the growth/pause cycle in action

Most plants can outgrow these problems if their needs are met. Try this:

  • cut back to within one inch from the stem
  • move to higher light
  • reduce watering
  • increase ventilation or open a window

Kalanchoes are pretty tough. Don't worry that you will kill it by pruning.

| improve this answer | |
  • I have my plants outside in my garden. It will be the same care for my tagete? – Alejandra Lage May 14 '16 at 19:48
  • Can I put my plants with fungus with others? – Alejandra Lage May 14 '16 at 20:02
  • @Alejandra Lage physical separation prevents rain splashing spores onto the soil of other plants, so, don't put sick and healthy together – kevinsky May 14 '16 at 20:05

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