Does anyone know if this is an obvious and undoubtedly overwatered Phoenix Canariensis frond ?

[Bojan]

I've already posted detailed info about this issue, just want to know if any of experienced growers can diagnose by sight, alla minute, is this a classic over watering signature for Phoenix Canariensis, or it might be the signature of a bigger problem. I can't sleep for days. It showed up the next morning after watering, i have it for 6 years, never had a problem with it. This season Its still pretty cold, central Europe, nights go down to 10°Celsius, max daily is 18 °C and there is no heating. It is the lowest and oldest frond, but it happened so fast that i feel like i have to react ASAP. It happened immediately after watering, but the yellowing from inside out is confusing me.

 

Is this just wet feet in cold water or something worse?

 

I appreciate any kind of response.

Thanks

 

Bo.

[Las Palmas Norte]

It's quite difficult to over water one of these in a pot, certainly during a period of active growth. What seems concerning is a whitish residue or concentration where the leaflets meet the rachis. My P. roebelenii, 15 gallon (grouping of 4)  is outside in similar if not cooler overnight conditions, and has been watered every second day or so without any issues.

 

[Bojan]

Thank you so much for the   response, i somehow missed it, I'm new to this site. Yours looks amazing, but the main difference is that mine isn't outside, and almost had never seen direct sunlight, maybe golden hour during summers. But it was happy, not loosing fronds and getting bunch of new ones. Some of them are now almost 3 meters high and have overgrown my app. For the white marks, it is fungicide and some micro  nutrients that i applied foliary recently. So after a shower they gathered at that spot. I don't see any mealies, or any kind of invaders, it might be only fungus or bacteria, if it wasn't for overwatwring. Thing is, in Central Europe it's still cold outside, even cooler in condos, everything started when the official heating season was over, April 15. Since then, i have the yellowing problem with about 20 plants, it's just too cold, 10°C at night, days are about 20 °C but all together, with a general lack of sun that lasts for almost 2 months, make environment similar to Patagonia or Russia, cold and dark, prolonged. We had short spring in February, everything bloomed, but now since winter is back, all those flowers are gone, i pray for farmers, they're in a big problem. Maybe that's on purpose but let not spread conspiracies.

Does it look like a fungus maybe, since i lost big Kentia due to misterious galloping disease, prolly fungus, or black Kentia mold, illness specific only for Kentias, since it was touching my Phoenix, and fungus, as I've recently heard, may spread even through air, and can go pretty far.

For now I've lost 1 round of fronds, 3,4 of them, but it seems like it stopped for now. But im afraid what will happen after the next watering.

Speaking of growing season, its only on paper, in reality it's still mid February with 7°C nights and with longer, but not sunny days, which might be contraproductive, climate is definitely screwed. I see your fronds yellow normal, from the tip towards the stem. This yellowing from the frond base tells me it is a bigger issue than single overwatwring.

I used Copper Fungicide few days ago and now I'm praying for not seeing any new yellows. The new, upper fronds, seem ok and green for now.

Thanks a lot for response, I'm still in desperation, waiting for some expert to tell me exactly what the problem is, and how to treat it. I have about 3k pots in my condo, for plants that I've lost for more than 3 times i can give a diagnosis 100%, but this was my first and only Canariensis for last 7 years, not so experienced with them, i just hoped that there were experts here that can confidently claim the issue and the response action.

Again, thanks a lot, at least i know it probably is not overwatwring, i know they're heavy drinkers, during Avgusts they get almost a gallon every second, third day.

But the mystery remains...

Regards,

Bo