4 Pack Plant Self Watering Globes, Terracotta Watering Spikes, Slow Release Olla Pots Holds 16 oz, Drip Irrigiation Olla SystemDeep Root Gardening: Self watering planter insert for direct root hydration. Olla watering pots are new designed plant water globes used to promote water conservation up to 70%. Water Plants While Away: Terracotta watering spikes are clay olla self watering pots that release water to roots directly. Roots attach to olla watering pot clay wall over time for optimal feeding. Self Watering System: Water is delivered directly to the root with up to a 2