r/microgreens 3d ago

Coriander advice

Hey all. Been growing coriander for about 2 months now, I've been struggling with germination but now that I'm getting that figured out I've been getting this pop up.

Seems to come from underneath and spread from there, my first thought was overwatering but cutting down on that doesn't seem to have had an impact. H202 slows it but doesn't stop it. I also have seed from 2 different suppliers I've been comparing, and I'm only getting this from one of those.

Any suggestions would be greatly appreciated.

9 Upvotes

3

u/doctorcanna 3d ago

Friend, because you’re growing this for the plant material you would call this cilantro. Coriander is the seed.. and a reference to the seed.

Honestly man cilantro is really not easy at all.., it’ll be going great and then out of nowhere issues, issues, issues.

You’ve got some kind of contaminant going on here. And the environment that is good for the cilantro is also good for the contaminant and so the contaminant is growing and slowly harming the cilantro.

Looks pretty isolated.

Looks pretty wet, perhaps you had just sprayed it with something.. anyways that area is done for, scoop out the isolated area and toss it.

Don’t spray it from the top at this point at all anymore, only bottom water it. Every time you’re wetting the top you’re just inviting more contamination to take hold.

The rest of the tray/s is looking good though.

1

u/Alarming-Wolf9573 2d ago

What is strange is that over in some parts of Europe they call the whole plant coriander. At least I have heard it from 2 or 3 people. Not sure how true that is.

1

u/CocoNefertitty 2d ago

We call it corriander in UK.

1

u/Alarming-Wolf9573 2d ago

Thanks for confirming what I had heard.

1

u/MightyMicrogreensAU 2d ago

We call the leaf coriander in Aus, just to be different

I'd just sprayed with hydrogen peroxide just before taking the photo but the area around it is wetter than it should be also. I'm giving it 1/4 of the water I'd give Broccoli though so I'm a bit stumped there

It's a finicky one that's for sure

2

u/Microgreens-World 2d ago

As doctorcana pointed out, Cilantro is finicky.

There are numerous varieties of cilantro, each with its unique growth characteristics and flavor profiles. Some of the popular varieties include:

|| || |Leisure|Known for its slow-bolting characteristic, making it ideal for more extended harvest periods.[8]| |Slow Bolt|Another slow-bolting variety, perfect for warmer climates.| |Caribe|This variety is known for its robust growth and intense flavor.| |Jantar|A type of cilantro that is resistant to bolting and is known for its large leaves.| |Santos|A popular variety for commercial growers due to its high yields and excellent flavor.|

Each variety offers a unique twist on the classic cilantro flavor, allowing gardeners and chefs to choose the perfect type for their culinary creations.

Check out my article, Why Cilantro Microgreens Are a Must for Your Diet: A Nutrition Guide. There's a section on growing cilantro, including a video.

Your soil medium is bad. I'd start over with something different and simple, like a MiracleGro Professional Mix. Then, clean your trays thoroughly with soap, water, and commercial-grade H2O2 or other cleaner.

Let me know how it works out.

D. Andrew Neves
Founder and CSO
www.microgreensworld.com

P.S. Also, recheck your environment - Airflow, humidity, temperature, light, water - the works.

1

u/rightbyaccident 2d ago

Are you using split seeds? True leaf has leisure split cilantro seeds that help with consistency etc.

1

u/MightyMicrogreensAU 2d ago

I can't get pre split seeds where I am but I've been thinking if splitting them myself

1

u/desidivo 2d ago

If you have an indian store near you go and buy a bag of Coriander (make sure it is not toasted). Around here it is $3 for big bag.

Take the Coriander and put it between two paper towels and run a roller over it couple of time with medium pressure.

I bake my potting mix to sterilize before i use and it prevents most issues.

1

u/Microgreens-World 2d ago

As doctorcana pointed out, Cilantro is finicky.

There are numerous varieties of cilantro, each with its unique growth characteristics and flavor profiles. Some of the popular varieties include:

  • Leisure: Known for its slow-bolting characteristic, making it ideal for more extended harvest periods.
  • Slow Bolt: Another slow-bolting variety, perfect for warmer climates.
  • Caribe: This variety is known for its robust growth and intense flavor.
  • Jantar: A type of cilantro that is resistant to bolting and is known for its large leaves.
  • Santos: A popular variety for commercial growers due to its high yields and excellent flavor.

Each variety offers a unique twist on the classic cilantro flavor, allowing gardeners and chefs to choose the perfect type for their culinary creations.

Check out my article, Why Cilantro Microgreens Are a Must for Your Diet: A Nutrition Guide. There's a section on growing cilantro, including a video.

Your soil medium is bad. I'd start over with something different and simple, like a MiracleGro Professional Mix. Then, clean your trays thoroughly with soap, water, and commercial-grade H2O2 or other cleaner.

Let me know how it works out.

D. Andrew Neves
Founder and CSO
www.microgreensworld.com

P.S. Also, recheck your environment - Airflow, humidity, temperature, light, water - the works.

1

u/Alarming-Wolf9573 2d ago

I have not had a hard time growing Cilantro. We grow it every week and have not experienced any issues. We had a hard time figuring out how to get the hulls (or as I call them, Hats) to come off, but ever since figuring that out, it’s been nice.

1

u/lincolnloggonit 2d ago

I agree with Mr. Neves, I think its your soil, it looks water logged and is probably causing this condition, which looks similar to damp-off. There is also a fungus that is found in some fields called sclerotinia, which causes this kind of rot. I have seen it in some seeds, not sure if its in potting soil. Check through your seed and look for black lumps or small black cylinders. If you find any, cut one open. If the centre is white then you have sclerotinia fungus. I’ve never seen it in Coriander/Cilantro seed though, its probably unlikely. But every grower should know about it. Its more common in sunflower and radish.