Kentia Palms in Pots - Odd Spots?

[Kytte]

Hi all!

 

I am a gardener that looks after indoor plants at a few sites in the city I live in (Brisbane, Australia). At one of my sites once a fortnight - I look after and water some Kentia palms. They are located indoors and it is AC on some of the time, AC off after business hours. Well lit. But obviously does get hot when the AC is off. (In summer at the moment and have had some hot days!)

 

They have been chosen for the location and are appropriate for the climate and location. On the fortnights that I do see them, they get quite a few overhead waters to keep the fronds and new spears humid, and I brush off any emergent scale, water them with natrakelp if its been particularly hot, or eco hydrate if the soil has gone hydrophobic. They all seem happy and we have a few new fronds popping up as a result!

 

However, there is a pair of fronds in one pot I have my eyes on. They have some spots and I am concerned it is something sinister. Or is this simply the signs of a frond dying off. There is a new spear emerging in this particular palm. The spots dont appear fuzzy or active, but I wanted to see if anyone recognised it, or if there was any actions or things I need to look out for. Id rather be informed than have it take us by surprise. Have attached the images!

[happypalms]

 Bacterial leaf spot. Soil splash a big culprit to the disease and spreading. It can be wind borne.

[happypalms]

1 minute ago, happypalms said:

 Bacterial leaf spot. Soil splash a big culprit to the disease and spreading. It can be wind borne.

Reduce your sprinkling of water.