Ornamental · Nelumbonaceae
Sacred Lotus
Nelumbo nucifera
Offer it still water, full sun, and space to roam, and your lotus will raise its flowers proudly above the pond.
Full sun
USDA 4–10
3–6 ft · 0.9–1.8 m
Overview
Sacred lotus is the plant that lifts its leaves and blooms high above the water instead of floating them on the surface, and it's a rewarding one to try. It grows from a creeping rhizome tucked into soft pond-bottom mud, pushing up round, water-shedding leaves and fragrant flowers on tall stalks. Each bloom stays open only about three days before dropping its petals to show the woody, showerhead-shaped seed pod that tells you at a glance you're looking at a lotus.
This is an aquatic perennial, and it's forgiving of cold, hardy across USDA zones 4 to 10 as long as the rhizome rests below the freeze line through winter. Lotus has been grown for both food and beauty across Asia for a very long time, where the rhizomes, seeds, and young leaves all find their way into the kitchen. In a garden it settles into a wide, sturdy container sunk into a pond or a half-barrel, and that pot quietly keeps its eager roots from wandering.
More than anything, lotus asks for patience, and a little of it goes a long way. A freshly divided plant may spend its first season simply building roots and hold off flowering until the second year, so don't be discouraged. Give it heat, full sun, and still water, and it will settle in and become one of the boldest, most heartening plants you can grow on the water.
Care
The short version: give it full sun and still, warm water over a wide container of heavy clay loam, keep the rhizome below the freeze line through winter, and divide it every year or two so it doesn't outgrow its pot, and you'll do just fine.
Light
Lotus really does want full sun, at least 6 hours a day and more if you can manage it. Give it too little and you'll get lovely leaves but few or no flowers, so treat it to the brightest, most open spot you've got.
Water
Grow it in still, calm water over a wide container of heavy clay loam, and it settles in happily. Start with the crown about 6 inches deep, then let the water rise to 18 to 24 inches over the rhizome as the plant grows. Keep the rhizome below the freeze line, moving shallow containers to deeper water or indoors ahead of a hard freeze.
Soil
Plant it in heavy, organically rich clay loam, the mucky pond-bottom sort of substrate. Light, fluffy potting mixes just float off and won't hold the rhizome down, so pack the container with dense, weighty soil and cap it with sand or gravel to keep everything settled.
Temperature
This is a heat-loving plant that comes into its own in summer warmth and copes with temperatures up to about 100°F (38°C). The resting rhizome is a good deal tougher than the top growth and rides out cold down to roughly -29°F (-34°C), as long as it stays below the freeze line.
Humidity
Growing in open water, lotus already sits in high humidity, so there's nothing here for you to fuss over. The pond takes care of it, and the leaves never go short of moisture.
Feeding
Feed it right through the summer growing season with aquatic fertilizer tablets pressed down into the container substrate, roughly once a month. Ease off the feeding as growth slows toward fall and the plant drifts into dormancy.
Pruning
There's no structural pruning to worry about here. Just snip off yellowing or dead leaves and spent flower stalks to keep the water clean, and thin or divide crowded rhizomes when the plant begins to push at its edges.
Repotting
Plan to divide and repot every 1 to 2 years in spring, since the rhizome fills its container quickly and can crack the walls. Rhizomes circling the pot, a warped container, or smaller, crowded leaves are all gentle signals that it's time.
Size & spacing
A grown lotus reaches 3 to 6 feet (91 to 183 cm) tall and spreads 3 to 4 feet (91 to 122 cm) wide. Give each plant its own roomy container so the running rhizome has space to stretch and the leaves aren't jostling for light.
When to plant
Lotus takes its cue from warmth and stays asleep until the water heats up, so there's no rush. Set your rhizome divisions out in spring to early summer once the cold has passed, and then look forward to flowers held high above the water from June into July.
Northern hemisphere
Southern hemisphere
Typical months for a temperate climate: start earlier in warm zones, later where spring frosts linger.
- Sow: Not typically started indoors; usually grown from rhizome divisions planted in spring
- Plant: Spring to early summer once water has warmed
- Harvest: Summer (June to July); flowers held high above the water, each bloom lasting about three days
Hardiness
USDA hardiness zones: 4–10
Temperature: down to -34°C
Troubleshooting
Nearly every lotus hiccup comes down to one of three easy things: too little sun, a rhizome outgrowing its container, or the ordinary yellowing of old leaves. Catch the early signs below and you can settle a small worry long before it grows. Find what matches your plant, then act while it still does the most good.
Plenty of leaves but few or no flowers
If your lotus looks happy but won't bloom, take heart, because the cause is almost always simple to fix. Lotus opens its flowers only where it gets full sun and steady warmth, so a shady spot or a short, cool summer holds them back, and a young or freshly divided rhizome often waits a year before it blooms at all. Move it into the sun, settle it in a wide pot of heavy loam, let it enjoy a full warm season, and the flowers will come.
Fix:
- Site the container in full sun with 6 or more hours of direct light
- Allow a full warm season; do not expect bloom from a freshly divided or first-year plant
- Move to a larger, wider container of heavy loam so the rhizome can run
- Handle rhizomes gently when dividing or planting to avoid breakage
Rhizomes escaping the pot or cracking the container
Lotus grows with real gusto, and its creeping rhizomes travel fast through soft substrate, so an unconfined plant can fill a shallow pond within a year or two. Boxed into a pot that's grown too tight, that same strength presses on the walls until they split, but neither problem needs to worry you. Keep it in a wide, sturdy submerged container, divide it every year or two, and lift out any runner that slips free before it takes root in the pond floor.
Fix:
- Confine plants to wide, sturdy submerged containers rather than open pond mud
- Divide and thin rhizomes every 1-2 years
- Remove escaped rhizomes promptly to keep them from rooting into the pond bottom
Sticky, twisted new growth with tiny clustered insects
Little aphids like to cluster on soft new stems and leaves, leaving them sticky and puckered, and in a hot, dry stretch you might also spot spider mites as fine webbing and pale speckling. Don't worry, because a firm spray of water washes most of them away, and a pond with a few fish in it tends to keep the numbers low on its own. Leave the chemical sprays on the shelf, since they harm your fish and the good bugs right along with the pests.
Fix:
- Spray pests off with a strong jet of water
- Encourage fish and natural predators in the pond to control populations
- Avoid chemical pesticides that harm pond life and beneficial insects
Oldest leaves yellowing while new growth stays green
When only the oldest leaves turn yellow, there's nothing wrong, because this is just the plant aging naturally, and it shows up most as the season winds down and dormancy nears. Simply lift the dead leaves out so they don't spoil the water, and ease back on feeding as growth slows. Keep the rhizome tucked below the freeze line and it will rest through winter and return for you in spring.
Fix:
- Remove yellow or dead leaves to keep the water clean
- Allow normal seasonal dieback; reduce feeding as growth slows
Toxicity
You can breathe easy with sacred lotus, since it's safe through and through. It doesn't appear on the ASPCA toxic-plant list, and rather than posing any danger, its rhizomes, seeds, and young leaves are eaten as food across Asia. In spite of its name, it isn't a true lily and carries none of the risk that group brings to cats.
Safe for
People · Cats · Dogs · Horses · Rabbits · Livestock · Birds
Cats None
You can relax if a cat takes a nibble. Lotus isn't on the ASPCA toxic list, and a chewed leaf leaves your cat perfectly fine.
Dogs None
No need to worry about dogs. Should one chew the foliage or a dropped seed pod, the worst you might see is a soft stool from the extra roughage.
Horses Safe
Horses are welcome to graze the leaves along the water's edge, and since no part of the plant holds a toxin, they come to no harm.
Rabbits Safe
Rabbits are safe here too. The tender young leaves suit them well as an occasional treat rather than the main share of their diet.
Livestock Safe
Cattle, goats, and sheep can browse lotus along a pond margin without any trouble at all.
Birds Safe
Waterfowl and other birds happily eat the nourishing seeds in the wild, and the plant does them no harm.
People Safe
Sacred lotus is food you can trust. Cooks across Asia eat the rhizomes, seeds, and young leaves, and they're wholly safe for your own kitchen.
Edible and food-safe; the rhizomes, seeds, and leaves are used in cooking. No special handling precautions for pet households.
Varieties
A few named lotus are worth getting to know, from color-changing hybrids to dwarfs small enough for a half-barrel. Here are the ones to have on your radar.
Mrs. Perry D. Slocum
A much-loved cross between sacred and American lotus, its blooms open pink and shift toward yellow as they age.
Momo Botan
A little dwarf of just 1 to 2 feet tall, carrying double, sweetly fragrant rose-pink flowers around 5 inches wide that are ideal for half-barrels and small water gardens.
Chawan Basu
A dwarf variety scaled for small containers and tub gardens, so it fits happily where space is tight.
American lotus (Nelumbo lutea)
The lotus native to North America, offering pale-yellow flowers and the hardiness to overwinter down to USDA zone 4.
How to propagate
There are two friendly ways to multiply lotus, by splitting an established rhizome or by starting the hard seeds, and the one you choose decides how soon your flowers arrive.
DivisionModerate
Spring, as growth resumes · One full growing season; bloom often does not occur until the second year
Dividing is the dependable way to make more lotus, and it's easier than it sounds, done in spring once new growth stirs. Cut a length of the creeping rhizome, lay it flat near the rim of a wide container of heavy loam, cap it with sand or gravel, and lower it under the water. Be gentle with the growing tips as you handle it, then give the plant a full season to find its feet, remembering that first flowers often wait until the second year.
SeedModerate
Spring to summer in warm water · Slower to flowering than division; may take more than one season
Starting from seed is rewarding if you're patient with it. The tough seed coat needs a light scarifying before the seed will sprout in warm water, and blooms can take longer than one season to appear. Named cultivars won't grow true from seed, so if you want to match the parent plant, divide it instead.
Myths
Lotus and water lily are the same plant.
They come from separate families, and once you know the signs you'll tell them apart with ease. A lotus lifts its big round leaves and flowers well above the water on tall stalks and closes the season with a woody seed pod shaped like a showerhead, while a water lily rests its leaves and blooms flat on the surface and never grows that pod. You can eat the lotus leaves and seeds, but not the water lily's.