I switched from growing in the ground to 15 gal grow bags about five years ago due to build up of bacterial disease in my garden from growing tomatoes in the same ground for 28 years. My first two years in grow bags was a learning experience for sure. But since I switched to 4-18-38 per AKmark, I have enjoyed tremendous success growing the same large vine indeterminate varieties that I grew in the ground for years. As an example, this season so far I have 4 different varieties that have produced 30 oz, tomatoes from each different plant. The varieties are Tundra, SOTW, Rosovye Krupnye, & German Head. Also my Polish plant has so far produced a 27 oz fruit. So my opinion is that you can grow pretty much any large vine indeterminate in a 15 gal container using 4-18-38. Two of my plants are currently 8 ft tall with the others at 7 ft presently and growing strong.
Dan
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