Seed propagation is the preferred method for growers for producing ponytail palms! These trees have a characteristic bulbous trunk that give these trees wonderful character. They grow as great houseplants in medium light situations. They require less frequent watering, as they can store water. May take 14-21 days to germinate — keep the soil moist and warm and you will be rewarded with a wonderful houseplant or patio plant. Seed grown Ponytail palms are not pruned for height like in plants you find in garden centers. This will allow your tree to attain a larger more majestic growth habit.