Three ferns of your choice for £12 (P&P is extra). It would help to nominate a reserve fern, just in case any of your first choice ferns runs out (but please state clearly that this is as an alternative, rather than a fourth plant ordered).
Northern Maidenhair – Delicate, 20-40cm fronds with black stems, spread out into a fan-like circle. Hardy and easy to grow in moist, cool free draining environments in reasonable shade. Deciduous.
Japanese Tassle Fern Hardy semi-evergreen fern with pale-green fronds, with yellow bristles, growing up to 60cm. Fronds darken with age. Moist well-drained soil in semi-shade.
Japanese Painted Fern Hardy deciduous fern with arching, red veined silver-green fronds up to 45cm. Colour develops over the first few years. Makes good colourful ground-cover in shady sites in moist free-draining soil.
Soft-Shield Fern Hardy semi-evergreen fern with tall, upright, narrow fronds up to 90cm. Forms rosettes of soft dissected fronds. Moist soil in partial shade, or partially sunny site.
Sea Pen Evergreen mat-forming, with dark green fronds to 15cm. Good for moist neutral to acidic soil, in in partial or full shade, but will grow in full sun in damp soil.
Japanese Beech Fern Very attractive compact semi-evergeen fern with finely cut, soft green fronds held upright to 60cm. Moist soil in partial shade, but will tolerate periods of dry once established.