Fertilizer for Mandevilla in IL

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Dililly2 Mchenry, IL May 31, 2009

I read that a 10 20 10 fertilizer is necessary for blossoms. Tried all the garden centers and checked online -- can't find any! This is the first time I've planted this vine on my antique arbor. Cold weather this spring. Covered the plants last night when it got below 50 degrees.

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ecrane3 Dublin, CA(Zone 9a) May 31, 2009

I'll start by saying that I don't know what the best fertilizer is for mandevilla, but assuming that whoever told you 10-20-10 was correct, you don't necessarily need to find something that is exactly 10-20-10. The principle is that the middle number is higher than the other two, so most fertilizers that you find where the numbers are in about the same proportion as 10-20-10 should work OK. I would check out fertilizers labeled Bloom Boosters...these tend to have a higher middle number and should probably be close enough.

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