Quote:
Originally Posted by HiPoha
I have grown sweet potatoes in half 55 gallon drums and they grow well, except in my garden, they'll take over a year to produce good sized potatoes. Sweet potatoes are strong growers and don't need to be hilled like regular potatoes. Soil should be on the loose side with considerable compost. Grow bags should also be OK, I think I've seen them used on Youtube.
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I wonder if its a daylength/tropical thing that is making your sweet potatoes take so long? They take about 120 days or less here at about 30˚ N. If thats the case, maybe there is a variety that does better in the tropics? Sounds like something worth googling.
Edit: HiPoha
Here is an article about growing sweet potatoes in Hawaii. I dont know if it has any info you didnt already know, but It does mention that mainland varieties take to long to mature, and mentions some varieties that are better adapted.
http://www.extento.hawaii.edu/kbase/...etpot_prod.htm