19 oz Extra Large Plant Self Watering Globes - Slow Release Watering

In this review of the 19 oz Extra Large Plant Self Watering Globes, the bottom line is simple: these water bulbs are best for busy plant owners who want reliable, hands-off hydration for pots up to 10 in and similar sizes. The reviewer found the large 19 oz capacity and terracotta spike delivery system to be the single biggest reason to buy, because it provides steady, slow-release moisture for up to two weeks and reduces the need for frequent top watering. For vacation care or routine convenience, these devices make plant maintenance noticeably easier.

Key Features

• 19 oz large capacity: Each globe holds up to 19 oz of water, which can keep many houseplants hydrated for about two weeks and reduces watering frequency.
• Slow release with terracotta spikes: The clay spike creates consistent, bottom-up watering that helps prevent both under and overwatering.
• Multifunctional use: The system works indoors and outdoors and is suitable for homes, offices, classrooms, and patios.
• Water conservation: Acting like drip irrigation, the design can cut water waste and encourage healthier root growth through gradual soil wetting.
• Durable materials: The globes combine heavy-duty polyethylene terephthalate plastic with organic clay stakes for weather resistance and soil friendliness.
• Top fill convenience: The vessels top-fill for quick refills without disturbing the plant or soil.

Who It's For

The globes are ideal for plant owners who travel, have busy schedules, or maintain multiple potted plants and want a low-effort watering solution. They particularly suit medium and small potted plants such as herbs, flowering pots, and 10 in containers where steady moisture matters.

Those who need precision irrigation for very large container specimens or highly moisture-sensitive species should look elsewhere, since slow-release globes deliver steady moisture but do not offer adjustable flow rates or timed programming for complex watering needs.

Pros & Cons

Pros

• Large 19 oz capacity reduces refill frequency and supports up to roughly two weeks of watering for many plants.
• Terracotta spikes provide gradual, bottom-up watering that helps root development and reduces surface evaporation.
• Durable PET plastic and clay stakes make the system weather-resistant for indoor or outdoor use.
• Simple top-fill operation makes setup and refills quick and unobtrusive.

Cons

• Some customers report mixed long-term durability, so lifespan can vary with heavy outdoor exposure.
• Not adjustable for precise flow control, which may limit use with very moisture-sensitive plants.

Specifications

Capacity	19 oz
Delivery type	Terracotta spike slow release
Material	Polyethylene terephthalate plastic and clay stakes
Use cases	Indoor and outdoor, pots and planters
Fill method	Top fill
Pack size	4 pack

Our Verdict

These 19 oz self watering globes are a practical value for casual gardeners, vacationers, and busy households that need reliable, low-effort watering. Their large capacity, terracotta slow-release spikes, and simple top-fill design make them a good pick for most potted plants, though those needing adjustable irrigation or long-term heavy outdoor durability may want a different system.

Frequently Asked Questions

How long will a full globe last?
A full 19 oz globe typically provides up to about two weeks of watering for small to medium potted plants, depending on plant size and climate.

Can these be used outdoors?
Yes, the combination of PET plastic and clay stakes is weather-resistant for outdoor use, though longevity can vary with exposure.

Are they easy to refill?
Yes, the top-fill design allows quick refilling without disturbing the plant or soil.