your plants hungry, N deficiency; starts at the lower leaves, yellowing and dieing, and it crawls up the plant. you can buy miracle grow but only use it at half strength every other watering. But I recommend Schultz rose food 18-24-24 its only $5, if you follow shultz directions you will be fine, they're direction actual say to use half strength. it comes with a little 1/2 tsp scooper and you only use 4 scoops every other watering(1/2table spoon). never use full strength your stuff will die sooooo fast. you can use this commercial stuff all the way through the grow, just flush for the last 10 days of harvest. the reason i reccomend the rose food above the others is cuz its the closest thing you can get to optimal nute levels. K should be the highest through the grow it controls water uptake and makes fruit large and heavy... with out K orange trees make golf ball sized fruit. plant grow fastest at half strength(900-1500ppm). plant grow slowest with small leaves at 1/4 strength(300ppm) and full strength(2500ppm). good luck man!