Habe das gerade erst bemerkt. Ich habe sie seit Ewigkeiten nicht mehr gegossen, der letzte Beitrag über diese bestimmte Pflanze war vor 33 Tagen und einige sagten, sie sei tot. Ich hoffe, es ist kein Mehltau.
Von: This_Resource_396
Habe das gerade erst bemerkt. Ich habe sie seit Ewigkeiten nicht mehr gegossen, der letzte Beitrag über diese bestimmte Pflanze war vor 33 Tagen und einige sagten, sie sei tot. Ich hoffe, es ist kein Mehltau.
Von: This_Resource_396
13 Comments
This is powdery mildew. Rosemaries hate living indoors as houseplants. Things just get too humid for them. Powdery mildew likes humidity, and hates being dried out all the way or completely wet. Rosemaries can tolerate quite a bit of cold. If your region gets to soggy in the winter for them, you can put them under an awning where they don’t get as much rain.
Yeah, that looks like powdery mildew and it’s speading. I’ve heard some people treat with a neem oil solution but I cannot speak to that. What I do know is that the whitest parts are goners. Take that to the outside and cut the parts off. If you mess with it inside it will spread to your other plants
Rosemary have to be outside, in the sun.
Neem oil will get rid of the PM but do it outside. You dont want your house smelling like neem. At least to me its gross
Powdery mildew. Apply sulphur or Bordeaux mixture.
looks like it is struggling. The new shoots have mildew. Try a very dilute spray of 1 part vinegar 10 parts water. It is hit and miss as you can’t use chemicals on a plant that you eat. I’d also move it outside and let the rain get to it.
Try using diy horticulture oil if you plan to keep it inside.
I have managed to overwinter my rosemary indoors but with much trial and error. Grow lights for 12 hours, temps around 10C, fan moving air for 12 hours and very important, dehumidifier on furnace AND 1 more near by. We save the captured water for watering plants.
After May long weekend, we pip them outside in full sun until Labour Day then its back to the basement grow room.
So far my Lockwood de Forest and Majorca are thriving.
I move mine indoors every year and this happens. This year I used an indoor plant light for my rosemary and it dramatically improved the mildew. The plants are even showing new growth.
Bottom water them when they dry out. Sunny window or grow lights. It has a 50/50 chance
I don’t know if plucking the mildew will make a difference, but I would separate the plant from any others.
It’s been years, but I used milk once and it worked! [https://www.thespruce.com/how-to-use-milk-to-control-mildew-1402739](https://www.thespruce.com/how-to-use-milk-to-control-mildew-1402739)
Throw it out, throw out every plant that was near it. I’ve gotten my whole space (vents included) professionally cleaned for way less of an outbreak.