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For Signs to Fertilize
Yellowing leaves indicate lack of fertilizer or poor drainage.
Citrus trees feed heavily on nitrogen. Your
fertilizer should have more nitrogen (N) than phosphorous (P) or potassium (K).
Use at least a 2-1-1 ratio. Miracid Soil Acidifier is a water-soluble product
that works well and is a 3-1-1 ratio. In some regions, you may be able to find
specialized citrus/avocado fertilizers. Buy a good brand and apply according to
Also important are trace minerals like iron, zinc, and manganese, so make sure
those are included as well. Many all-purpose products will work. We prefer slow
release fertilizers in the granular form rather than fertilizer stakes. Follow
rates on the package carefully as fertilizers come in different strengths,
release rates, and application schedules. We recommend that you fertilize more
often than recommended with most slow release fertilizers. Foliar applications
of trace minerals in the form of kelp or other soluble fertilizers can be
effective on leaves when half their mature size.
Container trees also will need some
supplemental fertilizer. Use an organic, evenly balanced fertilizer in spring
and early summer; you don't need to fertilize in winter.
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