Pachypodium geayi (Apocinaceae). Price per 10 seeds. It has a metallic grey trunk that makes a nice pachycaul. Leaves are thin and grey-green, with a bright pink mid-rib. The plant has white flowers. Pachypodium geayi is one of the largest of the Madagascar species. Sowing : Sow seeds in summer in a ? 5 mm deep, sterile, sandy medium (4 parts fine and 4 parts coarse river sand; 1 part sieved, well-rotten compost; 1 part perlite; 1 part vermiculite) and cover with coarse river sand. Keep moist and at a temperature of 27-35?C to ensure rapid germination. They need high humidity to germinate but as soon as plantlet shows the water must be reduced drastically. Keep the seeding trays in bright light. Locality : Ex Hort. Date of harvest: May 2018.