Paurotis special problems

[Phoenikakias]

I grow many years a Paurotis in my garden. It is sufficiently cold hardy and grows well but it shows signs of deficiency every year though I feed it adequately. I would like to know what kind of deficiency this is (though I am quite sure it's potassium deficiency) and know experience from other growers in similiar climate (dry, hot summer and alkaline soil and water).

[Phoenikakias]

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[gilles06]

I think the problem (not so big) is alkaline soil, give them iron suplement in sring.

[Dave-Vero]

Your plants look pretty good. In Florida, they are native to wet areas and have a reputation for not tolerating dry soil. The climate is wet summer, dry winter. Institute for Regional Conservation (actually a small but expert organization) has information.

In cultivation, they seem to tolerate alkaline and acid soils.

[Mauna Kea Cloudforest]

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Dolomite lime and iron sulfate, plus more water, water and more water.