It also needs pruning to open up the structure. Reducing congestion improves air flow, decreases infection risk and allows sunlight to reach the entire leaf surface. Stems that grow toward the center are removed. It really needs to be outside as window sun is insufficient. Look up how to ‘harden off’ plants. If the rose came from a florist, it may not have the same winter hardiness as regular roses from nurseries. Full sun, consistent moisture without waterlogging and weekly checks for pests are all important. As mention, it needs a larger container asap.
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Transplant it into a bigger pot.
It also needs pruning to open up the structure. Reducing congestion improves air flow, decreases infection risk and allows sunlight to reach the entire leaf surface. Stems that grow toward the center are removed. It really needs to be outside as window sun is insufficient. Look up how to ‘harden off’ plants. If the rose came from a florist, it may not have the same winter hardiness as regular roses from nurseries. Full sun, consistent moisture without waterlogging and weekly checks for pests are all important. As mention, it needs a larger container asap.