Water Garden Questions

Waterlily Bear's Ultimate Mini-Pond FAQ

Author: Waterlily Bear aka Russell T. Baer : Last Updated June 21, 2026

The Water Lily Bear answers your most common container water gardening questions in this FAQ for both novice and experienced water gardeners wanting to have an informed and authoritative answer to help you have a successful and satisfying pond setup you can enjoy all season long.

What Size Container Do I Need To Grow A Water Lily?

Most water lilies thrive in containers of 8 to 15+ gallons, with 18 inches in diameter as a practical minimum that leaves room for a companion bog plant or two. In a pinch, dwarf and pygmy cultivars can survive in a 5-gallon bucket, but they'll reward you with far more blooms once given room to spread.

Where Can I Buy Affordable Waterlily Tubers & Pond Plants?

Commercial aquatic plant greenhouses like GreenPro or Aquarium Plants Factory are some of the largest warehouse shippers of cheap bare-root waterlily tubers, bog and aquarium plants. You can order directly for low-cost bare tubers, or find their listings in eBay and Amazon Home & Garden categories.

  • Amazon Aquatic Plants
  • eBay Aquatic Plants
  • Chalily
  • VanNess Water Gardens
  • William Tricker Inc.

What's It Cost To Set Up A Container Water Garden?

A patio tub or small garden pond needn't cost more than $100 - especially if you already have a suitable container you can repurpose for water gardening. A $15 to $30 waterlily tuber might be the only 'major' expense. If you're resourceful, a Dollar Store can provide most of the water gardening tools you need for ongoing maintenance.

How Can I Propagate New Waterlily & Pond Plants?

There are several ways to propagate aquatic plants: their nature is to reproduce. You may be surprised how many new pond plants you can end up with after a single growing season!

  • Root Divisions
  • New Tuber Formation
  • Viviparous Lily Pad Plantlets
  • Seed Collection

Can I Grow A Water Lily Without An Inground Pond?

Absolutely - container tub gardens, half wine barrels, and even aquariums can host water lilies, and some aquarists grow tiger lotus bulbs for dramatic submerged foliage effect. The real limiting factor indoors isn't space but light intensity - water lilies demand full sun to bloom, which no aquarium setup can realistically deliver.

What Soil Should I Use For Water Lilies In A Container?

Water lilies want heavy, nutrient-rich clay soil - the dark, dense, mucky stuff you'd find at the bottom of a natural pond, not fluffy potting mix that floats away and suffocates roots. If you live near a lake, river, or pond, scooping out a couple gallons of that bottom sediment is honestly the ideal starter soil for your first container water garden.

How Do I Keep Mosquitoes Out Of My Tub Water Garden?

The easiest and most delightful solution is a couple of small goldfish - they'll eagerly patrol your container and devour any mosquito larvae before they have a chance to hatch. Spending a dollar on a few small feeder goldfish from PetSmart or PetCo is a dirt cheap, beneficial addition to any mini-pond water garden. If fish aren't practical, Mosquito Dunks using BT - Bacillus thuringiensis bacteria - decimate mosquito larvae's digestive cycles naturally and safely for fish and humans. Hormonal larvicides can also disrupt larval development before they mature into flying adults.

  • Biological Control
  • Chemical/Hormonal Control
  • Fish Control

Why Is My Water Lily Not Blooming?

The number one reason water lilies refuse to bloom is insufficient sunlight - less than six hours of direct sun daily and your plant will survive but sulk without flowers. More sun equals more blooms, though if your garden is partially shaded, some specific cultivars are notably more tolerant than others and WaterlilyBear can point you toward the right ones.

How Often Should I Fertilize My Water Lily, And What Should I Use?

If you start with rich, dense pond soil your water lily may only need a single mid-season feeding when blooming or growth begins to slow. WaterlilyBear prefers Jobe's or Miracle-Gro flowering houseplant spikes over large pond plant tablets - they deliver nutrients gently without the risk of burning roots or spiking algae in a small container.

What's The Difference Between Hardy And Tropical Water Lilies?

Hardy water lilies have tough, fibrous rhizomes and roots like established perennial flowers and may take a full season to hit their stride, often performing spectacularly in their second year. Tropical water lilies are best treated as tender annuals with delicate bean sprout-like roots. Once planted, leave them undisturbed in the same container all season and they'll reward you with an explosive, non-stop floral display. Hardies overwinter easily. Tropicals are notoriously hard to revive from dormancy.

How Do I Control Algae In My Container Water Garden?

Algae in garden ponds is both desirable and unavoidable - it's a critical part of every pond's ecosystem, oxygen and nutrient cycle. A healthy algal biofilm lining your container walls is actually part of a balanced pond ecosystem, providing a natural grazing surface for fish and snails. Algae blooms typically clear themselves once a pond's balance is achieved. If stringy filament algae becomes invasive, a bottle brush or even an old hairbrush lets you gently wind and pull the strands away from plant stems without disrupting your water chemistry. Worst case, you can simply drain and scrub a container water garden and refill for a quick pond water rejuvenation.

Can I Keep Goldfish Or Other Fish In A Small Container Water Garden?

Any small fish appropriate for your climate will thrive in a container water garden, the key word being small, since larger fish constantly stir up sediment and disturb and stress plants in confined spaces. Koi are beautiful but aggressive, fast-growing, and expensive compared to the simple delight of two or three small goldfish shimmering beneath your lily pads.

How Do I Overwinter A Tropical Water Lily?

Tropical water lilies are notoriously difficult to revive after dormancy, and most experienced growers simply treat them as annuals and start fresh each season. If you want to attempt tuber storage, pack them in damp sand in a cool dark location and replant carefully - protecting the tiny growing point at all costs - once water temperatures hold consistently at 70°F.

How Deep Should The Water Be In A Container Water Garden?

WaterlilyBear grows water lilies as shallow as the plant will tolerate, especially during establishment - many varieties thrive with just 4 to 6 inches of water over the crown. The deeper the container the more energy the plant burns pushing pads and flower buds to the surface, so when in doubt start shallow and lower the plant only as vigorous growth demands.

What Other Plants Grow Well Alongside Water Lilies In A Tub?

Marginal plants like arrowhead, pickerelweed, and water iris thrive with just 1 to 4 inches of water over their crowns and add beautiful vertical height when positioned at the container edge with your water lily centered in its own pot. There are dwarf varieties of certain pond plants that are more appropriate in height and scale for mini-pond water gardens too. Free-floating plants like water hyacinth or water lettuce add a finishing touch of texture and interest while doing double duty shading the water and suppressing algae.

What Are The Benefits Of Tub Water Gardening?

No garden space is complete without some sort of water feature! The benefits of adding a small pond water garden are many. A tub garden pond adds high focal interest in a manageable small space at low cost. Another benefit is all the critters: butterflies, birds, bees, bugs and beyond that will be attracted to your sparkling mini-pond water garden.

Why Won't An Aquatic Plant Nursery Ship To My Location?

States, provinces, and entire countries may have laws that ban the intra- or interstate shipment of certain plant species for environmental reasons. The ban may be based on invasiveness of the plant itself, or on pests or diseases the plant may host. These regulations can vary widely. In the USA it largely falls under state jurisdiction.

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