I put it in some seedling starter soil I bought. It's just pretty much tiny wood chips. It's winter here in Australia and it's been 3 days and it hasn't cracked yet. Temperature is around 5° - 15° Degrees celciess every day. Should I put it in a wet paper towel in a ziplock bag and put it in my pants to keep it warm until it cracks then put in back in soil? Is it normal for it to take this long to crack in the cold weather?