Century Plant vs Lily Plant Comparison
Compare these two plants side by side — care needs, key differences, and which is right for your home.
Century Plant
Agave americana
Agave americana, commonly known as the Century Plant, is a large, succulent plant characterized by its rosette of thick, fleshy, gray-green leaves. Each leaf is armed with sharp teeth along the margins and a formidable terminal spine. Despite its name, it typically lives for 10-30 years, not a century. It is primarily an outdoor plant, grown for its dramatic architectural form in arid and semi-arid landscapes. It flowers only once in its lifetime, sending up a massive stalk that can reach several meters in height, after which the main rosette dies. People grow it for its striking appearance and drought tolerance.
Lily
Lilium spp.
Lilies are bulbous herbaceous perennials known for their large, prominent flowers. They are primarily outdoor plants, thriving in gardens and landscapes. Lilies exhibit a wide range of flower colors, shapes, and sizes, making them popular ornamental plants. They are grown for their aesthetic appeal, fragrance, and use in cut flower arrangements. While some varieties can be forced to bloom indoors, maintaining their long-term health and vigor indoors is challenging.
Quick Plant Comparison
| Feature | Century Plant | Lily |
|---|---|---|
| Light | Full sun, requires at least 6-8 hours of direct sunlight daily. | Full sun to partial shade outdoors. Indoors, requires very bright, direct light, ideally a south-facing window. |
| Watering | Every 2-4 weeks, depending on climate and soil drainage. | Outdoors: 1-2 times per week depending on weather. Indoors: Every 7-10 days, allowing the soil to dry slightly between waterings. |
| Humidity | 30-50% | 40-60% |
| Temperature | 15-30°C | 15-25°C |
| Care Level | Expert | Expert |
| Growth Rate | Slow | Moderate |
| Max Height | Rarely flowers indoors; if it does, the flower stalk can reach several meters. The plant itself can reach 1-2 meters in height indoors. | Indoors: 30-90 cm (highly variable depending on the variety; often smaller than outdoor specimens) |
| Pet Safety | ❌ Toxic To Pets | ❌ Toxic To Pets |
| Soil | Well-draining succulent mix (cactus mix) with added perlite or sand. | Well-draining, slightly acidic to neutral soil mix. A mix of potting soil, perlite, and compost is suitable. |
| Beginner Friendly | ❌ No | ❌ No |
| Weekly Maintenance | 15 minutes monthly | 15 minutes weekly |
🔬 Botanical Information — Comparing These Plants
Century Plant
| Scientific Name | Agave americana |
|---|---|
| Family | Asparagaceae |
| Native To | Mexico, Southwestern United States |
| Also Known As | Century Plant, American Aloe, Maguey |
| Leaves | The leaves are thick, fleshy, and gray-green in color. They are lance-shaped and have sharp, hooked teeth along the margins and a sharp, pointed terminal spine. The leaves can grow up to 1-2 meters long. |
| Flowers | Flowers are rare indoors. Outdoors, after many years (10-30), the plant sends up a massive flower stalk that can reach several meters in height. The flowers are typically yellow or greenish-yellow and are borne in dense clusters. |
Lily
| Scientific Name | Lilium spp. |
|---|---|
| Family | Liliaceae |
| Native To | Primarily Northern Hemisphere, including Europe, Asia, and North America |
| Also Known As | Lily, True Lily |
| Leaves | The leaves are typically lance-shaped, smooth, and green. They are arranged alternately or in whorls along the stem. Leaf size varies depending on the variety. |
| Flowers | Lilies may flower indoors if given sufficient light and proper care, but it is not guaranteed. The flowers are large, trumpet-shaped, and come in a wide range of colors, including white, pink, yellow, orange, and red. They are often fragrant. |
📏 Size & Growth — Plant Comparison
Century Plant
Lily
🌱 Propagation — Comparing Plant Growth
Century Plant
Methods: Offsets (pups), Seed
Difficulty: Moderate
Tips: Separate offsets from the mother plant in spring or summer. Allow the cut end to callus over for a few days before planting in well-draining soil. Keep slightly moist until roots develop.
Lily
Methods: Bulb offsets, scaling, seed
Difficulty: Moderate
Tips: Separate bulb offsets when repotting. Scaling involves removing individual scales from the bulb and planting them in a moist medium. Seeds can be sown, but flowering may take several years.
✨ Benefits & Features — Comparing Plant Value
Century Plant
The Century Plant is unique for its monocarpic nature, meaning it flowers only once in its lifetime before dying. Its dramatic size and architectural form make it a standout in any landscape. The leaves have sharp teeth and a terminal spine.
- ✓ Drought tolerance reduces water consumption.
- ✓ Provides a striking architectural element to the landscape.
- ✓ Requires minimal maintenance once established.
- ✓ Can be used in xeriscaping to create water-wise gardens.
- ✓ Provides habitat for pollinators and other wildlife in its native range.
- ⚠️ Toxic to pets
Lily
Lilies are known for their large, showy flowers and strong fragrance. They are bulbous perennials, meaning they grow from bulbs that can be replanted year after year. The flowers come in a wide variety of colors and shapes, making them a popular choice for gardens and cut flower arrangements.
- ✓ Aesthetically pleasing flowers that can brighten up a space.
- ✓ Fragrant blooms can add a pleasant scent to the home (if they bloom).
- ✓ Can be a rewarding challenge for experienced gardeners.
- ✓ Provides a connection to nature indoors.
- ✓ Can be used as a temporary indoor display before planting outdoors.
- ⚠️ Toxic to pets
📅 Maintenance Schedule — Plant Care Comparison
Century Plant
Lily
🌞 Light Requirements
Century Plant
Full sun, requires at least 6-8 hours of direct sunlight daily.
Low light tolerant: ❌ No
Lily
Full sun to partial shade outdoors. Indoors, requires very bright, direct light, ideally a south-facing window.
Low light tolerant: ❌ No
💧 Watering Needs
Century Plant
Water deeply but infrequently, allowing the soil to dry out completely between waterings. Overwatering can lead to root rot. Signs of underwatering include shriveled leaves. Signs of overwatering include soft, mushy leaves.
Lily
Water thoroughly when the top inch of soil feels dry. Avoid overwatering, which can lead to bulb rot. Ensure good drainage. Signs of overwatering include yellowing leaves and a mushy bulb. Underwatering results in wilting and browning leaf tips.
🌡️ Temperature & Humidity
Century Plant
Temperature: 15-30°C
Humidity: 30-50%
Lily
Temperature: 15-25°C
Humidity: 40-60%
🤔 Which Plant Is Right For You?
Century Plant
Agave americanaExperienced gardeners in warm, sunny climates who want a dramatic, drought-tolerant landscape plant.
✅ Choose This Plant If...
- You live in a warm, dry climate with plenty of sunlight.
- You want a low-maintenance, drought-tolerant plant.
- You appreciate dramatic, architectural plants.
- You have a large outdoor space to accommodate its size.
- You are an experienced gardener familiar with succulent care.
❌ Skip This Plant If...
- You live in a cold climate with limited sunlight.
- You have small children or pets due to the sharp spines and toxicity.
- You have limited space indoors.
- You tend to overwater plants.
- You are a beginner gardener.
Lily
Lilium spp.Experienced gardeners who want to attempt growing lilies indoors with supplemental lighting and careful monitoring.
✅ Choose This Plant If...
- You love the look and fragrance of lilies and are willing to provide the intense light they need indoors.
- You are an experienced gardener and enjoy a challenge.
- You are able to keep lilies completely away from pets.
- You have a bright, south-facing window or grow lights to provide adequate light.
- You are willing to carefully monitor watering to prevent bulb rot.
❌ Skip This Plant If...
- You have cats, as lilies are extremely toxic to them.
- You are a beginner gardener, as lilies can be challenging to grow indoors.
- You do not have a very bright, sunny location in your home.
🎯 Quick Verdict
⚡ Key Differences Between These Plants
Century Plant has slow growth, while Lily grows moderate.
💡 Pro Tips For Comparing These Plants
Century Plant Care Tips
Agave americana is primarily an outdoor plant and is challenging to grow indoors due to its high light requirements and large size. It needs very well-draining soil and infrequent watering. Providing sufficient light is the biggest challenge indoors. It also needs a very large pot.
- Provide excellent drainage to prevent root rot.
- Acclimate the plant gradually to full sun to avoid sunburn.
- Water deeply but infrequently, allowing the soil to dry out completely between waterings.
- Protect from frost in colder climates.
- Wear gloves and eye protection when handling to avoid injury from the sharp spines.
Lily Care Tips
Lilies are primarily outdoor plants and require specific conditions to thrive indoors. They need very bright light, well-draining soil, and careful watering to avoid bulb rot. Maintaining consistent humidity and temperature can also be challenging indoors. Due to their toxicity to pets, careful placement is crucial.
- Provide supplemental lighting if natural light is insufficient.
- Use a well-draining potting mix to prevent bulb rot.
- Monitor closely for pests and diseases.
- Allow the soil to dry slightly between waterings.
- Provide a cool, dormant period in the winter by reducing watering and keeping the plant in a cooler location.
⚠️ Common Problems & Solutions — Plant Care Comparison
Century Plant
Lily
❓ Frequently Asked Questions — Comparing These Plants
Century Plant
What are the light requirements for Century Plant?
Century Plants require ample sunlight to thrive. Ideally, provide at least six hours of direct sunlight per day. An east- or south-facing window is usually the best location indoors. Insufficient light can lead to etiolation, where the plant stretches and becomes leggy in search of light. If you live in an area with limited sunlight, consider supplementing with a grow light. When moving a Century Plant from a shaded area to direct sunlight, do so gradually to prevent sunburn. Rotate the plant regularly to ensure even growth on all sides.
How do I care for Century Plant?
Century Plants are relatively easy to care for, thriving on neglect and well-draining conditions. Provide bright, direct sunlight for at least six hours per day. Use a well-draining potting mix specifically formulated for cacti and succulents. Water sparingly, allowing the soil to dry out completely between waterings. During the growing season (spring and summer), water more frequently, but always ensure proper drainage. Reduce watering significantly during the dormant period (fall and winter). Fertilize sparingly, using a balanced liquid fertilizer diluted to half strength, only during the growing season. Repot only when the plant becomes root-bound, typically every few years. Protect from frost and freezing temperatures. Ensure good air circulation to prevent fungal diseases.
How do I propagate Century Plant?
Century Plants can be propagated through several methods: leaf cuttings, offsets (pups), and stem cuttings. Offsets are the easiest method. Carefully detach offsets from the base of the mother plant, ensuring they have roots. Allow the offsets to callous over for a few days before planting in well-draining soil. For leaf cuttings, allow the cut end to callous over for a week before placing it on top of well-draining soil. Mist lightly and wait for roots to develop. Stem cuttings should be taken from the flower stalk after it has finished blooming. Allow the cut end to callous over before planting. Keep the soil slightly moist until roots develop.
Lily
What are the light requirements for Lily?
Lilies require bright, indirect light to thrive and produce abundant blooms. Insufficient light can lead to weak stems, pale foliage, and a lack of flowering. An east- or west-facing window is ideal, providing several hours of bright light without direct sunlight, which can scorch the leaves. If natural light is limited, supplement with grow lights. Rotate the pot regularly to ensure even light exposure on all sides of the plant. Avoid placing lilies in dark corners or areas with low light. The duration of light exposure is also crucial; aim for at least six hours of bright light daily during the growing season.
How do I care for Lily?
Lilies thrive with bright, indirect light, ideally near an east- or west-facing window. Water thoroughly when the top inch of soil feels dry, ensuring good drainage to prevent root rot. Maintain moderate humidity levels, especially for indoor lilies. Fertilize regularly during the growing season (spring and summer) with a balanced liquid fertilizer, diluted to half strength, to promote abundant blooms. After flowering, allow the foliage to die back naturally, then cut back the stem to soil level. Repot annually in spring using well-draining potting mix. Protect from extreme temperatures and drafts. Monitor for pests like aphids and treat promptly. With proper care, your lilies will reward you with stunning blooms year after year. Remember to choose the right type of lily for your indoor environment, as some varieties are better suited for pots than others.
How do I propagate Lily?
Lilies can be propagated through bulb division, stem cuttings, and keiki (small bulbets that form along the stem).
Last updated: April 18, 2026 — Plant care data reviewed and verified by our editorial team.