Prickly Plants are Spiked obstacles found in Super Mario Galaxy and Super Mario Galaxy 2. You take damage upon touching one of these things. They are usually seen in grassy areas or wide open areas with little to no obstacles. They usually have Star Bits or Coins inside them. There are larger Prickly Plants which usually have Launch Stars or Sling Stars inside. They can be destroyed by whacking a Coconut or a Bulb Tree into them or with some Power-Ups like the Fire Flower, Rock Mushroom, or the Rainbow Star.