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Choosing the right fertilizer for my Anthuriums?

Posted by jennabee 9 (My Page) on
Fri, May 18, 07 at 16:07

I was wondering if someone can shed some light on purchasing the right fertilizer for my Anthuriums. I am growing a nice Anthurium Anturio that I purchased at my local exotic plant store. I just repotted them last weekend in a nice quality Orchid Mix, as I have read a lot of people have had success growing them in that mixture.

I've read mixed reviews on fertilizers. I know that Anthuriums are sensitive to Nitrogen, but some websites say to choose a fertilizer that is rich in Nitrogen. However, other websites said to choose a fertilizer where the middle number (Phosphoric Acid) is the highest number, so the plant will put out more blooms. I currently have a fertilizer that is 7-13-9 which I was thinking I would use diluted to 1/8 strength every 6 weeks for them, but I want to be sure I am using the proper fertilizer.

When I repotted this weekend I went from a 6 inch pot to a 7 1/2 inch pot, and the roots looked healthy but somewhat cramped. My goal is to get a fertilizer that will help me grow this plant to be larger and put out more blooms, and I know not to overdo it. If anyone can let me know what fertilizers, brands, or dilutions worked for them I would be most greatful! Thanks!

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RE: Choosing the right fertilizer for my Anthuriums?

  • Posted by bihai zone 9 (My Page) on
    Fri, May 18, 07 at 18:36

Are you growing this as a houseplant, or outdoors?
I personally do not use diluted fertilizer on the anthuriums I have in the ground, or the ones in pots hanging in the greenhouse. I used to use full strentgh Miracle Grow, which is 15-30-15.

However, in recent times, (ie this season) I have strayed away from MG and am using a special order fertilizer called Peter's Excel 15-5-15 Cal/Mag.

Why, you ask? Because the soil here (ahem I mean the SAND here) is so darn nutrient deficient, I found that some of my anthuriums (and palms and other plants) in the ground were having micronutrient deficiencies and MG wasn't correcting it. Rather than having to use a separate micronutrient spray or powder application, I use this fertilizer which is a water soluble just like MG but also has more of what my plants need.

I do have 3 anthuriums in the house as houseplants, and on them I use the same type of fertilizer, only once a month instead of every 7 days.

I personally don't think anthuriums are fragile plants. Mine are pretty tough, I grow many different species as well as the hybrids of "flamingo flower" type anthuriums. The more important thing to be thinking about than fertilizer is humidity, warmth, and correct light.

Anthuriums are mostly epiphytic in nature and the roots will always want to get out of the pot eventually. Good air circulation is key in the house.

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