Temperatures. 1  Valleys/low level: Plus 4 rising to 10 Celsius. 2  At 900m: Minus 1 rising to 2 Celsius. 3  Freezing level: 800 metres rising above the summits by the end of the morning.
1 You can also start okra directly in your garden 3 to 4 weeks before the last spring frost date as long as you cover the plants with a cold frame or grow tunnel until the weather warms up. Make sure that the covering is 2 to 3 feet tall so that the plants have room to grow. You can soak the seeds overnight in tepid water to help speed up germination. 2  If you are planting okra transplants, be sure to space them 1 to 2 feet apart to give them ample room to grow. 3  Okra plants are tall, so be sure to space out the rows 3 to 4 feet apart.
Prior to planting, soak the okra seeds in water for 12 to 18 hours to soften its hard seed coat. Soaking aids moisture absorption and germination. Plant okra in the spring or early summer once the threat of frost has passed. To prevent the seeds from rotting, the soil should have warmed to at least 65 degrees.