tcamp 15 pack terracotta watering spikes, plant watering devices wine bottle automatic plant self watering spikes for vacations, self-watering stakes for indoor outdoor plants 15pack is up for auction in Patio, Lawn & Garden. The current bid is $1.00, 96% below the $27.99 MSRP, in New/Like New condition. Bid on this item at our Amelia - Ohio Pike location before the auction closes.