"Hi Stephen. Modak is a very dense stone and it is unlikely that the hollow sound is from the slab itself. Slate paving can sound hollow if it has delaminated (split along a seam internally) and softer sandstones such as Fossil can make dull sounds…"
"Assume the worst they will try anything. I found good soft cut grass with in built undulations the most fun. Tellytubby style or think miniature Iron age fort ground shapes, then they can roll up and down. Also moss is good, however clover lawns and…"
"Escalonia family? Always amazed how unobservant customers are. Always seem to say it had a daisy flower. Just had a customer telling me about this amazing 'GRASS' they had seen in a garden. Turned out it was a Gaura."