I am still looking at photos of Dahlias from the weekend show. Just to reiterate, they really are easy to grow in any garden soil as long as it is not waterlogged.They do need a bit of space to reach their full potential and sadly this is often lacking in most city gardens including mine. One of the most popular flower types is the Cactus variety. To use the technical language, it can be described thus: Flowerheads are fully double with long, pointed ray florets, strongly recurved for more than half of their length, and either straight or curling towards the centre of the bloom. Just to confuse the issue there is also a class called the Semi-Cactus and these have broader petals at the base and are only slightly pointed.