Triumph Tulips are strong growing with heights between 35cm - 50cm and are excellent for potting or garden display. There are early, mid and late flowering varieties. Chilling them at 5c for 6 to 8 weeks will give you extra stem length, and they will germinate and flower earlier. Early flowering varieties will flower approx. 6 weeks after germination, mid flowering - 8 to10 weeks, and late flowering - approx.12 weeks.  Planting a mixture of flowering times will give you an on going brilliant display of colour. They are also popular for cut flowers.