Few summer flowers can compete with lilies for sheer drama. Tall stems rise above the garden carrying large, colorful blooms in shades of white, yellow, orange, pink, red, and burgundy. Some lilies are intensely fragrant, while others provide brilliant color without much scent at all.
True lilies belong to the genus Lilium and grow from scaly bulbs. This group includes familiar Asiatic, Oriental, Trumpet, Martagon, Easter, and many hybrid lilies. With the right location and good drainage, many can return and multiply for years.
Lilies are not particularly difficult plants, but a few details make a big difference. The bulbs dislike waterlogged soil, different types have somewhat different planting requirements, tall varieties may need support, and the foliage needs to remain in place after flowering so the bulb can recharge for the following year.
There is also one extremely important consideration for households with cats: true lilies are dangerously toxic to them. More on that below.
🌸 What Is a True Lily?
The name “lily” is attached to many plants that are not actually lilies.
Daylilies belong to the genus Hemerocallis. Calla lilies are Zantedeschia. Canna lilies belong to Canna, while lily of the valley is Convallaria majalis. Peace lilies are members of the genus Spathiphyllum.
True lilies belong to Lilium.
They are herbaceous perennials that grow from bulbs made of overlapping fleshy scales rather than the papery-coated bulbs familiar from tulips or daffodils. The stems emerge in spring, bloom during the warmer months, and eventually die back as the plants become dormant.
Depending on the type and cultivar, a lily may remain fairly compact or grow several feet tall.
🌈 Types of Lilies to Grow
The enormous number of garden lilies can seem complicated at first, but a few major groups account for many of the plants sold by garden centers.
Asiatic Lilies
Asiatic lilies are among the easiest true lilies for beginners. They generally bloom relatively early and come in a huge range of bright colors, including yellow, orange, red, pink, white, and multicolored combinations.
Their flowers often face upward or outward, and most Asiatic hybrids have little or no fragrance.
They are an excellent choice if you want strong color without the powerful perfume associated with some other lilies.
Oriental Lilies
Oriental lilies are known for large, luxurious flowers and strong fragrance.
Famous cultivars such as ‘Stargazer’ belong to this general group. Their flowers often appear later than those of Asiatic lilies, helping extend the lily season deeper into summer.
Oriental lilies generally prefer humus-rich, well-drained soil on the acidic side rather than highly alkaline conditions.
Trumpet Lilies
Trumpet lilies produce elongated, trumpet-shaped flowers, often with a powerful fragrance.
Many grow quite tall and can make an impressive background plant in a perennial border. Because of their height and large blooms, some need staking in exposed locations.
Martagon Lilies
Martagon lilies have smaller, downward-facing flowers with dramatically recurved petals.
They tolerate more shade than many familiar garden lilies and can work well in woodland-style plantings. They also tend to become increasingly impressive once established, although they may take some time to settle into a new location.
Easter Lilies
The familiar white Easter lily is Lilium longiflorum.
These lilies are commonly sold as flowering potted plants in spring, often after being forced into bloom for the holiday. Their natural outdoor flowering schedule is different from the timing seen on store shelves.
Whether an Easter lily can successfully move into the garden depends on climate and local growing conditions.
Orienpet Lilies
Orienpets, sometimes called OT hybrids, combine Oriental and Trumpet lily parentage.
They are often tall, vigorous plants with large fragrant flowers and can create an impressive focal point in the garden.
Whatever group you choose, check the individual cultivar’s mature height, bloom time, hardiness, and soil preferences rather than assuming every Lilium wants exactly the same conditions.
☀️ How Much Sun Do Lilies Need?
Most common garden lilies grow well in full sun to partial shade.
A location receiving around six hours of sunlight can produce strong flowering, although some varieties tolerate less. Martagon lilies are particularly useful where conditions are somewhat shadier.
Lilies are sometimes described as preferring their “heads in the sun and feet in the shade.” The idea is that the flowering stems benefit from light while the root zone stays relatively cool.
You do not need to construct literal shade over the bulbs. A layer of mulch or lower-growing neighboring plants can help moderate soil temperatures and moisture.
Deep shade is generally less successful. Lilies reaching strongly toward available light can become weak and floppy, and flowering may decline.
🌱 The Best Soil for Lilies
Drainage matters tremendously.
Lily bulbs need moisture while actively growing, but they do not tolerate sitting indefinitely in saturated soil. Prolonged waterlogging can cause bulbs to rot.
A fertile, moisture-retentive but well-drained garden soil is ideal for many varieties.
Soil preferences are not identical across all lilies. Oriental hybrids usually perform better in acidic conditions, while many Asiatic hybrids tolerate a broader pH range. Trumpet lilies are often adaptable to ordinary garden soil.
If you are unsure of the requirements for a particular cultivar, check its label or supplier information before altering the soil.
Gardeners with heavy, persistently wet clay may have better results improving the overall drainage of the planting area or growing lilies in raised beds or containers rather than creating small pockets that remain waterlogged.
🍂 When Should You Plant Lily Bulbs?
Lilies can generally be planted in fall or spring.
Autumn planting gives bulbs an opportunity to establish roots before the next growing season, while spring planting works well when bulbs become available later.
Unlike some dormant bulbs with protective papery tunics, lily bulbs can dry out relatively easily.
Plant them reasonably soon after purchase rather than leaving them sitting for weeks in a warm garage or on a shelf.
Choose bulbs that feel firm and healthy rather than shriveled, excessively soft, or moldy.
🕳️ How Deep Should You Plant Lily Bulbs?
There is no single planting-depth rule that works perfectly for every true lily.
Some lilies produce roots only from the base of the bulb, while others produce additional roots from the underground portion of the stem above the bulb. Those stem-rooting lilies are generally planted more deeply.
The Royal Horticultural Society recommends planting basal-rooting lilies at approximately the height of the bulb and stem-rooting types at roughly two and a half times the bulb’s height. Other horticultural references provide deeper recommendations for particular Lilium groups and species.
That variation is exactly why the planting directions supplied with your specific lily are valuable.
Position the bulb with its basal plate and existing roots downward and the pointed scales upward.
Spacing also varies by cultivar, but bulbs are often planted around 6 inches apart or approximately three bulb-widths from one another.
Planting several lilies together usually creates a stronger visual effect than scattering single stems randomly around a bed.
🌿 How to Plant Lily Bulbs
Prepare the planting area so the soil is loose and drains properly.
Place the bulb at the appropriate depth for its type and gently return the soil around it. Avoid crushing or breaking the fleshy scales.
Water after planting to settle the surrounding soil.
If you are planting an especially tall cultivar that will need a stake, consider placing the support at planting time. Driving a stake into the ground later creates the possibility of piercing the underground bulb.
Marking the planting site can also be useful while lilies are dormant.
💧 How Often Should You Water Lilies?
Lilies appreciate reasonably consistent moisture during active growth but should never sit constantly in soggy soil.
Newly planted bulbs need enough water to encourage root development. Established garden lilies may require supplemental irrigation during extended dry periods, particularly while actively growing and flowering.
Rather than watering according to a fixed schedule, check the soil.
Containers need closer attention because potting mix dries much more quickly than garden soil.
Continue providing appropriate moisture after flowering while the leaves remain green. The plant is still actively storing energy during this period even though the flowers are gone.
As the foliage naturally yellows and dies back, watering needs decrease.
🌿 Should You Mulch Lilies?
Mulch can be very helpful.
A layer of compost, leaf mold, or another suitable organic mulch helps reduce moisture loss, suppress weeds, and keep the root zone cooler.
Avoid piling mulch directly against the emerging stems.
Mulching is particularly useful for the “cool roots” conditions that many lilies prefer while their flowering stems reach into the sun.
As organic mulch decomposes, it can also gradually contribute organic matter to the soil.
🌱 Do Lilies Need Fertilizer?
Lilies growing in healthy, fertile garden soil do not require excessive feeding.
Adding compost or other organic matter to the bed can support steady growth. Container-grown lilies generally need more regular feeding because nutrients are gradually depleted or washed from the potting mix.
The Royal Horticultural Society recommends a high-potassium liquid fertilizer for container lilies during the growing season.
Avoid assuming that more fertilizer automatically produces more flowers. Excessive feeding, especially with high levels of nitrogen, can promote soft leafy growth rather than improving the display.
When garden plants consistently struggle, a soil test is more useful than repeatedly adding fertilizer without knowing what is missing.
🗓️ When Do Lilies Bloom?
Bloom time varies considerably by type and cultivar.
Asiatic lilies are generally among the earlier garden lilies, flowering from late spring into early summer depending on climate.
Trumpet lilies tend to follow, while Oriental lilies commonly flower later in summer.
By combining several groups, gardeners can create a lily display that continues for much longer than a planting consisting of one cultivar.
Weather and local climate also influence bloom times, so dates printed in catalogs should be regarded as general guides rather than guarantees.
✂️ Should You Deadhead Lilies?
Yes, if you are not trying to collect seed.
When a flower fades, remove the spent bloom and developing seedpod while leaving as much of the green stem and foliage intact as possible.
Deadheading stops the plant from investing energy in seed production.
What it generally does not do is make the same lily stem generate an entirely new crop of flowers later that season.
Each stem produces its scheduled flower buds, and once they have all finished, that stem’s flowering season is essentially over.
The remaining green plant still has important work to do.
🍃 Don’t Cut Lily Leaves Down After Flowering
This is one of the most important parts of lily care.
After the flowers finish, leave the stem and leaves in place while they remain green.
The foliage continues photosynthesizing and replenishing energy stored in the bulb. That stored energy supports next year’s growth and flowering.
Cutting healthy foliage down immediately after flowering may weaken the bulb and reduce future performance.
Wait until the stem and leaves have naturally turned yellow or brown.
Once the top growth has died back for the season, cut it down near ground level.
🪵 Do Lilies Need Staking?
Shorter Asiatic cultivars may stand perfectly well on their own.
Tall Oriental, Trumpet, and hybrid lilies can need support, particularly in windy gardens or once large flowers make the stems top-heavy.
Place stakes early, ideally when planting or before stems become tall.
Tie the stem loosely rather than cinching it tightly against the support.
Several lilies planted among sturdy perennials may also receive some natural support from their neighbors.
If plants repeatedly lean strongly toward the sun, consider whether the location has become too shady.
🌷 Good Companion Plants for Lilies
Lilies fit easily into mixed perennial borders because their narrow upright stems can rise between lower-growing plants.
Catmint, salvia, hardy geraniums, yarrow, coneflowers, and other sun-loving perennials can provide complementary foliage and flowers while helping shade the soil around lily roots.
Compact shrubs and ornamental grasses can also provide useful structure.
When selecting companions, concentrate on matching growing conditions rather than simply choosing an attractive color combination.
A plant that loves dry, lean soil will not necessarily be the best long-term partner for a lily that prefers richer and more consistently moist conditions.
For more ideas for building a long-blooming perennial border, see our guide to 10 Deer-Resistant Perennials for a Beautiful, Low-Browse Garden.
🪴 Can You Grow Lilies in Pots?
Absolutely.
Lilies can make spectacular container plants, and pots are particularly useful when garden soil is too heavy or poorly drained.
Choose a container with generous drainage holes and enough depth for both the bulbs and their root systems.
Taller lilies need large, heavy pots so the flowering stems do not make the entire container top-heavy in wind.
A group of several bulbs planted together creates a particularly effective display.
Container-grown lilies require more attention to watering than plants growing in the ground. Keep the growing medium reasonably moist while the plants are active without allowing the pots to remain saturated.
The bulbs also receive less insulation from winter cold when they are above ground in containers, so gardeners in colder climates may need to protect the pots according to the hardiness of the lilies being grown.
❄️ Do Lily Bulbs Stay in the Ground Over Winter?
Many common garden lilies are hardy perennials and can remain in the ground from year to year when grown within their appropriate hardiness range.
The stems die back, but the bulbs remain dormant underground.
Winter drainage is particularly important. A hardy bulb can still rot if it spends months sitting in saturated soil.
Hardiness varies among species and hybrids, so check the cultivar rather than relying on a single hardiness-zone number for every Lilium.
In very cold areas, container-grown bulbs may need more winter protection than the same cultivar would require when planted directly in the ground.
🌱 Do Lilies Multiply?
Yes.
Established lily bulbs can gradually produce offsets or small daughter bulbs, eventually creating larger clumps.
Those offsets can be separated and replanted when the plant is dormant.
Lilies can also be propagated through bulb scales, bulbils produced by certain species, and seed.
Seed propagation requires considerably more patience. Seed-grown lilies can take several years to reach flowering size, and offspring from hybrids may not resemble the parent plant.
For most home gardeners, allowing bulbs to produce offsets is the simplest way to increase a planting.
🔄 When Should You Divide Lilies?
Lilies do not need the frequent division associated with some rapidly expanding perennials.
If a clump becomes congested, flowering declines, or you simply want to move some bulbs elsewhere, division can be done when the plants have finished their season and become dormant.
Dig carefully to avoid damaging the bulbs.
Separate healthy offsets and replant them promptly so the exposed bulbs do not dry out unnecessarily.
Remember where the original clump was located before digging—you may find more bulbs underground than expected.
🐞 Common Lily Pests
Aphids can feed on lilies and are particularly concerning because they can spread viral diseases between plants.
Slugs and snails may chew tender shoots, especially as they emerge in spring.
In regions where it occurs, the bright red lily leaf beetle can cause substantial damage to true lilies. Both adults and larvae eat the foliage, buds, and flowers.
Regular inspection helps catch infestations early.
Pest problems vary greatly by region, so your local Extension service is often the best source for identifying the insects affecting lilies in your area and choosing an appropriate management method.
🍂 Common Lily Diseases
Good growing conditions prevent many problems.
Bulb rot is particularly associated with poorly drained, waterlogged soil.
Botrytis and other fungal diseases may become more troublesome during persistently wet conditions, especially where plants are crowded and airflow is poor.
Viruses can also affect lilies, sometimes causing distorted growth or unusual streaking and mottling. Because aphids can transmit some lily viruses, managing aphid populations can help reduce spread.
Plants showing persistent unexplained decline or abnormal coloration may need closer diagnosis before assuming the problem is nutritional.
💐 Lilies as Cut Flowers
Lilies are excellent cut flowers and are widely grown for arrangements.
Cut stems when some buds are beginning to open while others remain closed, allowing the display to continue developing indoors.
Avoid removing too much foliage from plants you want to keep growing in the garden. The bulb still needs leaves to produce energy.
Lily pollen can stain clothing, table linens, and furniture. Florists sometimes remove the pollen-bearing anthers once flowers open for this reason.
Handle them carefully rather than rubbing pollen, since grinding it into fabric can make stains more difficult to remove.
And if you have a cat, do not bring true lilies into the house at all.
🚨 Lilies Are Extremely Dangerous to Cats
This deserves much more than a passing mention.
True lilies in the genus Lilium are extremely toxic to cats.
According to the U.S. Food and Drug Administration, the entire plant can be dangerous—including the leaves, flowers, stems, and pollen. Even drinking water from a vase containing lilies can result in poisoning.
A cat does not necessarily need to chew up an entire plant. Pollen can fall onto its fur and later be swallowed during grooming.
Exposure can cause acute kidney failure and can be fatal.
Daylilies (Hemerocallis) are also highly dangerous to cats even though they are not true lilies.
If you believe a cat has chewed a lily, licked lily pollen, or drunk water from a vase containing lilies, contact a veterinarian or veterinary poison-control service immediately. Do not wait for symptoms to appear.
For households with cats, the safest approach is simply not to bring true lilies or daylilies into areas the cat can access.
🐕 What About Dogs?
The extreme kidney toxicity associated with true lilies is particularly a concern for cats.
That does not mean every plant called a “lily” is harmless to dogs, however. Several unrelated plants bearing the lily name contain entirely different toxins, and bulbs of ornamental plants can also create gastrointestinal or other problems when chewed.
Because common names are confusing, identify the actual plant rather than assuming its safety from the word “lily.”
If a pet eats an unknown ornamental plant, contact a veterinarian for guidance.
🌺 Why Isn’t a Daylily a True Lily?
Daylilies look superficially similar to lilies, which explains the common name, but they belong to the genus Hemerocallis rather than Lilium.
Their growth is quite different.
True lilies grow from bulbs and generally produce a single upright stem lined with leaves.
Daylilies grow as clumps of strap-shaped foliage, with separate flowering stalks emerging above the leaves.
Each individual daylily flower also typically lasts only about a day, although a mature plant can produce many buds over an extended period.
Knowing the distinction is helpful for both gardening and pet safety.
🌿 Should You Grow Lilies Near Other Pets?
In a household with a cat that has outdoor access, the cat-safety issue deserves serious consideration before planting lilies.
Even if a cat does not normally chew plants, pollen can be transferred during contact and swallowed while grooming.
For dogs and other pets, risks vary with the plant species and the part consumed.
Garden placement can reduce access, but it is difficult to guarantee that a free-roaming cat will never encounter an outdoor lily.
Where pet exposure is a realistic possibility, selecting a different flowering perennial may be the simplest solution.
🌼 Why Didn’t My Lilies Bloom?
Several factors can reduce flowering.
Too much shade can weaken plants and limit flower production. Bulbs planted in persistently wet soil may deteriorate underground. Removing foliage too early the previous season can leave the bulb without enough stored energy to produce a strong display.
Newly planted bulbs may also need time to establish.
Crowding, poor soil conditions, disease, or a cultivar that is poorly suited to the local climate can also affect performance.
Start by checking the basics: sunlight, drainage, foliage management, and the health of the bulb.
Avoid reaching automatically for fertilizer when the real issue may be shade or waterlogged soil.
🌸 How to Keep Lilies Blooming Well Year After Year
Long-term lily care is surprisingly simple once the plants are growing in the right place.
Give them enough light. Keep the soil moist but well drained. Support tall stems before they fall. Remove faded flowers if you are not saving seed, but leave the green foliage untouched.
Most importantly, allow the plant to finish its natural annual cycle.
The flower display may be the reason we grow lilies, but the weeks after flowering are what prepare the bulb to repeat that display next year.
A lily that is allowed to recharge naturally can become more impressive over time rather than functioning as a one-season plant.
🌷 Lilies Bring Big Color to the Summer Garden
True lilies can fill the gap between spring bulbs and later summer perennials with some of the most spectacular flowers in the garden.
Asiatic lilies offer early color and easy care. Oriental lilies bring fragrance and enormous blooms. Trumpet varieties rise dramatically above the border, while Martagons offer a different shape and greater tolerance for partial shade.
The key is choosing the right lily for the site rather than treating every plant with “lily” in its name as interchangeable.
Plant healthy bulbs in well-drained soil, give them suitable light and moisture, protect the foliage after flowering, and let the bulbs rest undisturbed through winter.
With those basic needs met, lilies can return year after year—each summer sending up new stems topped with flowers that are almost impossible to overlook.
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