Ask a Question forum: Help for Canary Island Date Palms

Views: 194, Replies: 8 » Jump to the end
Sonoma County
RiddlerSF
Jan 13, 2018 3:07 AM CST
I have several Canary Island Date Palms trees that have grown relatively well for several years. Lately, the older fronds have become increasingly yellow despite my giving the plants compost, and then a feeding or two of fertilizer. The trees continue to generate considerable new growth despite the progress of the yellowing condition.

In addition to a photo of one of the trees, I have included a close up of one of the fronds.

The palms are in Zone 10 (West Sonoma County, CA). The soil drains well, but the subsoil is quite acidic, and we get alot of rain in late Fall and Winter.

Thanks.
Thumb of 2018-01-13/RiddlerSF/a940b8
Thumb of 2018-01-13/RiddlerSF/cf206e

Name: Scott
Tampa FL (Westchase)
Tropicals Region: Florida Enjoys or suffers hot summers Bromeliad Plumerias Dog Lover
Foliage Fan Orchids Cactus and Succulents
Image
ScotTi
Jan 13, 2018 8:33 AM CST
I had the same problem here in FL with my Canary palms. I was told it was magnesium deficient. It was suggested to me to add magnesium 4x per year in addition to my 3x per year reg palm fertilizer. When fertilizing palms spread fertilizer evenly on soil from the trunk out to the leaf drip line area. Starting this feeding program will not help the now deficient leaves improve, but its future will be greener.
Name: Philip Becker
Fresno California (Zone 8a)
Image
Philipwonel
Jan 13, 2018 8:48 AM CST
Maybe acid to high Shrug! !
But I think it's being a palm tree.
Generally, for each set of frounds that grow, the lower set die off.
You could also be over or under watering.
Anything i say, could be misrepresented, or wrong.
Name: Philip Becker
Fresno California (Zone 8a)
Image
Philipwonel
Jan 13, 2018 8:53 AM CST
Then easy fix. Use Empson salt. See label. πŸ•΅οΈ Lol.
Anything i say, could be misrepresented, or wrong.
Sonoma County
RiddlerSF
Jan 13, 2018 11:47 AM CST

Thanks for the suggestion re magnesium deficiency. I also have not been fertilizing 4x year.

We grow grapes here too (the palms accent the vineyard area), so we have alot of data regarding soil chemistry, which can vary considerably over small distances because the subsoil geology is so diverse in Nor Cal. For the most part, the subsoil is actually quite high in magnesium (too high in it's unamended state), which is why I always find it hard to attribute plant problems to magnesium deficiencies. At the same time, I appreciate that whether and how a plant obtains it's magnesium from the soil doesn't always track the elemental magnesium that is there. The magnesium may not be "available" to the plant in sufficient amounts for a variety of reasons.

BTW, does anyone know if the Canary Island Date Palm is particularly sensitive to the calcium/magnesium ratio in the soil (grapes can be)?
Name: Philip Becker
Fresno California (Zone 8a)
Image
Philipwonel
Jan 14, 2018 12:16 PM CST
Ahh, Riddler, the wine country. NiceπŸ‘. What's name of your vineyard.

The epsom salt makes elements available to plants.
Hear, in fresno CA. People feed there roses with it twice a year, for larger roses. It also is helpfull for tomatoes, peppers, eggplants, niteshade family .
Goggle epsom salt , there is lots of information there.

😎😎😎
Anything i say, could be misrepresented, or wrong.
Name: Arlene
Florida's east coast (Zone 9a)
Tropicals Daylilies Bromeliad Region: Florida Enjoys or suffers hot summers Birds
Garden Photography
Image
florange
Jan 14, 2018 2:02 PM CST
I have had a pygmy date palm in the Florida backyard for 18 yr. It has never exhibited magnesium deficiency although a neighbor's palms do. It gets it's fertilizer from the garden box next to it when rain gets heavy. I've never ever fertilized it and our sand has zero nutritional content.
Sonoma County
RiddlerSF
Jan 16, 2018 9:53 PM CST
Philipwonel said:Ahh, Riddler, the wine country. NiceπŸ‘. What's name of your vineyard.

The epsom salt makes elements available to plants.
Hear, in fresno CA. People feed there roses with it twice a year, for larger roses. It also is helpfull for tomatoes, peppers, eggplants, niteshade family .
Goggle epsom salt , there is lots of information there.

😎😎😎


The vineyard is aptly called Riddle Vineyard. We grow Pinot Noir and Chardonnay. You can find the winemakers who source from us online.

We fertilized all the palms this weekend with a palm specific fertilizer that included a slow release N component, but no additional Mg. We added Epsom Salt at a rate of about 6 ounces per plant. The more I compare the yellowing fronds to examples on the web of Mg deficiency, the more it looks like the Epsom Salt may do the trick. Time will tell.
Name: Philip Becker
Fresno California (Zone 8a)
Image
Philipwonel
Jan 17, 2018 9:50 AM CST
Thank you, and your welcome. I tip my hat to you. I tip my hat to you.
Hope you have a great grape harvest πŸ‘πŸ‘πŸ‘
😎😎😎
Anything i say, could be misrepresented, or wrong.

« Garden.org Homepage
« Back to the top
« Forums List
« Ask a Question forum
Only the members of the Members group may reply to this thread.

Member Login:

Username:

Password:

[ Join now ]

Today's site banner is by EscondidoCal and is called "Geranium maderense"