50 Swiss Chard Seeds. Chard can be grown outdoors, in the greenhouse, under a sheltered canopy or in pots on the balcony. Sowing time: April or May. Plant height 20-40 cm. Delicious vegetables seeds. Grow a robust rainbow chard plant yourself. Rainbow mix chard loves warmth. It's best to pre-germinate the seeds in germination bags or mini-greenhouses at room temperature. Please plant chard seeds under suitable environment, temperature and humidity during planting. Store unused chard seeds in a sealed container. After-sales service. If you have any questions about rainbow mix chard seeds, please contact us by email. We will answer you within 24 hours. Swiss Chard Seeds Lets You Grow Your Own Sweet and Delicious Chard! About Rainbow Mix Chard Seeds Sowing time: April or May. Plant height 20-40 cm. Delicious vegetables seeds. Rainbow mix chard loves warmth. It's best to pre-germinate the seeds in germination bags or mini-greenhouses at room temperature. Please plant chard seeds under suitable environment, temperature and humidity during planting. Store unused chard seeds in a sealed container. Product Included 50 Swiss Chard Seeds