How to grow cluster beans on a terrace?

Cluster beans (guar) thrive in India's hot summers. Sow directly in 12-litre pots March–July. Guar fixes nitrogen and needs minimal fertilisation. Water every 2 days. Bush varieties need no support; climbing types need a short trellis. Harvest tender pods at 5–7 cm when young and soft. Over-mature pods become fibrous and bitter. One plant yields pods over 6–8 weeks. Good companion with corn and bottle gourd.