Fennel Seeds (Foeniculum vulgare) Ref: TM01400626 SowingPrepare the ground well and rake to a fine tilth before sowing. Sow early spring outdoors where they are to grow, 12mm (½in) deep in rows 38cm (15in) apart.GrowingWhen large enough to handle thin out to 30cm (12in) apart.Aftercare They prefer a sunny site and well drained soil but will grow in most sites and soils.FloweringcroppingPlant typeHardy Perennial Herb Price: £1.69 Quantity: