Dionaea muscipula ‘Big Mouth’ (syn. ‘Red-Purple’, ‘Giant Big Mouth’) – The distinctive features of this Venus Fly Trap are very large traps (up to 5cm wide) that are produced on short leaves. It is easy to grow with traps often being a beautiful reddish-purple hue. It will definitely colour better under good lighting levels. Grows 4-5″ high by 8″ wide. Hardy to zone 7.
Dionaea muscipula ‘Noir’ – I came across this cultivar at the Urban Bog of Langley British Columbia but have yet to find any details about its lineage or basic attributes. The plants have very dark reddish-purple traps borne on slender pale green stalks, although colour will vary by season. Even the bud tips of new growth are deeply coloured. Grows 6″ high by 8″ wide. Zone 7.
Dionaea muscipula ‘Mirror’ – A bit of a genetic mutation or freak that was discovered in Germany (by Dieter Blancquaert) and produces smaller secondary traps on the backside of some of the traps – giving it a two-headed appearance. It is rare in cultivation and is generally reproduced by cloning. Irrigate with rain or distilled water. Grows 6″ high by 8″ wide. Hardy to zone 7.
Dionaea muscipula ‘Wacky Traps’ – A chance find by Mike Ross while visiting Cresco Nursery in the Netherlands. It features traps that never develop properly with jagged or scalloped irregular edges and bright red colouring inside – making them very distinct. This cultivar appears to be sterile and cannot reproduce sexually due to its deformities. Grows 4-6″ high by 8″ wide. Zone 7.
Dionaea muscipula ‘Watermelon’ – The new growth of this Dionaea cultivar in spring and early autumn is distinctly a watermelon pink inside the traps, with a whitish-green edge. Like most Venus Fly Traps it should be kept evenly moist during dormancy (about 3-4 months) but should not sit in water. Overwinter in north facing window. Grows 6″ high. Zone 7.