Queen palm yellowing

[NickJames]

What does this look like? Potassium deficiency?

These have been at my house for a year. They get A LOT of fertilizer both organic and inorganic. They regularly get the compost tea from my compost bin and Florikan. 

Having said that, they did take on quite a bit of the flooding from Ian and sat in water for about a week. It’s possible they lost some nutrients that are now getting added back into soil as the florikan continues to release. 

[Jim in Los Altos]

Yes, classic potassium deficiency. Add some soluble potash to the soil. The existing yellow spotting will never go away but new foliage will be all green. 

[Billeb]

15 minutes ago, Jim in Los Altos said:

Yes, classic potassium deficiency. Add some soluble potash to the soil. The existing yellow spotting will never go away but new foliage will be all green. 

@Jim in Los Altos, is this the same remedy for other genres? I noticed today my Ch. Hookeri appears yellower than it should be. Rhopalastylis Baeuri could be greener too. 
 

-dale

[Patrick]

Yup. Same treatment for all....

 

Keep in mind if your soil is too cold, as in wintertime for many areas, nutrient uptake will be poor. 

[Patrick]

14 hours ago, Billeb said:

@Jim in Los Altos, is this the same remedy for other genres? I noticed today my Ch. Hookeri appears yellower than it should be. Rhopalastylis Baeuri could be greener too. 
 

-dale

Is that overall, or just on the oldest tips? The potassium and magnesium deficiencies show up on the oldest leaf tips and leaves. If it's more overall I would guess that is a nitrogen issue, but probably more because of the cold weather.  Cold soil slows nitrogen uptake and so things kind of yellow all over. You see it a lot more here up in Norcal in the winter, especially on fertilizer pigs like Queens.... 

 

For my potassium deficiencies I try to search out a Sul-Po-Mag fertilizer, as you need to treat for both Potassium AND magnesium when you treat for either. Treating just one symptom encourages the other, opposite deficiency. At least that's what I've learned and been told...

Edited December 23, 2022 by Patrick

[Jim in Los Altos]

15 hours ago, Billeb said:

@Jim in Los Altos, is this the same remedy for other genres? I noticed today my Ch. Hookeri appears yellower than it should be. Rhopalastylis Baeuri could be greener too. 
 

-dale

Not necessarily. Potassium deficiency shows up as yellow or orangish spotting on leaflets. General overall yellowing can be nitrogen and/or iron deficiency.