melocactus

I planted some Melocactus seeds that were given to me by one of my fellow members of the New York Cactus and Succulent Society.  This is them a week later!  I love how baby cacti start out as little green spheres on top of a fuzzy white beard of roots, and don’t even get me started on their little black seed hats!

rodrigo730 asked:

Good afternoon Dan, i have a question that i know you could answer, its about the color of two melocactus of my collection. well a year ago y bought a m. curvispinus var. caesius kind of big (like 3 years old), it has a grass green color, i thought it was its original tone (ive seen in google pics of that specimen in habitat with same), but a week ago i bought same with another color (dark green, like regular cactus), i took it cause it made me think. Both are same shape and stuff, what happen?

Hi! It probably has something to do with metal nutrient availability either during growth or at present. Paler colouration could be caused by less available Iron or Magnesium in the soil the plant is/was growing in. Alternatively, it could be caused by the plant receiving a little less light during growth, so the plant doesn’t synthesise as much pigmentation as it could in brighter light. The last possibility is that it could just be due to genetic variation.

Happy growing!