Cussonia arenicola (Araliaceae) Date of harvest : May 2010. Locality : Bella Vista. Sowing : Make sure seed trays are at least 15 cm in depth to allow the small tubers to form. Do not allow seed to become waterlogged or dry out. Keep seed and seedlings in a semi-shaded area. Seedlings can be transplanted at about 4 months, but be very careful not to damage the fleshy roots when transplanting.