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where we can find chalk soil?

Asked from the GoYpedia chalk soil plants page



You need to live in an area where the underlying rock is chalk or limestone. These soils tend to be alkaline and thin and dry out easily, so are challenging to grow lots of popular types of plants in. Some plants prefer these conditions however & the page that you refer to shows some of these.

Sorry I don't know if any areas of the Philippines are chalky, but I did find this map that shows different soil types -

28 Jul, 2010


If you wish to grow chalk loving plants then you will need to buy horticultural lime and treat the soil where the plants are to grow.

28 Jul, 2010


Aren't the Phillipines largely of volcanic origin? To find chalk, you'd need to have an ancient sea floor where marine organisms have been compressed into chalk which has then been raised by mountain building above the ocean as land.
I'd therefore be very surprised if you will find any chalky soil in the Phillipines, but you may be able to achieve the same effect using powdered limestone or chalk which is imported.

28 Jul, 2010


In the Philippines, such soils would be found on fossil coral reefs near the coast. If transported elsewhere, such soils will probably need regular applications of lime to keep their character. Keep in mind the climate if you are looking for plants for chalk soil: many of the plants listed in the planting guide will only be happy at high elevations in the Philippines.

28 Jul, 2010


Bertie, that's what I thought (mostly volcanic?) but the map I gave the link for shows numerous bands of limestone spread here and there across most of the islands that have been recorded on the map.

28 Jul, 2010


I should have thought of that! Because of their geologic history, some of those ancient coral reefs could have been uplifted right into the mountains.

28 Jul, 2010


Amazing what you can learn on this website!
Not just gardening but the geology of the Philippines!
A propos of nothing, it's interesting here that if you dig down a little way you come to a chalky, sandy layer called 'falun' which is packed full of fossils from the miocene and pliocene, inc. things like sharks' teeth.
This part of France was a shallow sea back then, only 9 million years ago, so with global warming we might one day end up on the coast!
I guess the Philippines has an equally long if not longer geologic history, so fossil reefs in the mountains are to be expected.

29 Jul, 2010

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