Rangoon Creeper Yellowing Leaves & Annual Seed Timing

Planted Rangoon creeper two months ago (September). Stopped growing at top, leaves yellowing and falling. Should it be in full sun? When to sow aster, coreopsis, cosmos seeds? First time growing these.

Expert Advice

Rangoon creeper needs full sun. Leaf drop has various causes, but yours needs more sun. They're otherwise low-maintenance. You didn't specify your season in India, but those annuals are usually sown in spring. In frost-free areas, sow anytime, but use containers in summer to move to shade during peak heat.