What kind of rice grows so high ?

[Speedo1968]

I live outside of a small market town south of Khon Kaen.

There is a basic keep fit, walking, cycling park.    One round is 500 metres.
The park has a large rain fill pond, a smaller pond, and cement channels that have fish and frogs etc.
The central area is down to wild grasses that are cut regularly.
To one side of the park is a small area of untouched original land, the owner, an old man, prepared the land and planted rice, a few edible flowers etc.

The rice grew VERY rapidly to a height of over 150cm.    It was cut back to about 60cm 10 days ago and already back to over a metre.

No added fertilizer and chemical free.

Anyone any clues as to what kind of rice he is using ?
Sorry no picture will try to get and post.

 

[2 is 1]

You sure its rice? Not Thai rice anyway. You can grow all kind rice in mountain. Normaly in mountain has really good soil. 

Rice terrace from Chiang Mai: