Aztec Lily (Sprekelia formosissima) - How to Grow & Care Guide

Plant Snapshot

Common Name: Aztec Lily
Latin Name: Sprekelia formosissima
Hardiness Zones: USDA 8–11; hardy in warm temperate zones and treated as tender where winters are colder. In colder zones bulbs are often lifted or heavily mulched.
Typical Height: 12–24 in (30–60 cm) from soil to top of flower scape
Typical Spread: 12–18 in (30–45 cm) clumps as bulbs produce offsets
Bloom Period: Spring to early summer
Soil Preferences: Rich, well drained soil. Neutral to slightly acidic pH. Avoid waterlogged conditions which can rot bulbs.
Light Preferences: Full sun to part shade. In hot climates provide some afternoon shade to reduce leaf scorch.
Toxicity: Contains alkaloids typical of Amaryllidaceae. Bulbs and plant parts can cause gastrointestinal upset if ingested and may cause skin irritation on handling. Exercise caution with pets and children.
Propagation: By offsets or bulblets and by seed. Divide clumps after dormancy to maintain vigor.

Key Facts

Bulbous perennial in the amaryllis family
Native to Mexico
Produces dramatic red funnel shaped flowers on leafless scapes
Flowers are typically produced on single stalks above the foliage
Plants grow from bulbs and commonly produce offsets
Prefers well drained fertile soil and full sun to part shade
Tender in cold climates and bulbs are often lifted or protected for winter

Aztec Lily (Sprekelia formosissima) is a bulbous perennial from Mexico prized for its dramatic red funnel shaped flowers on leafless scapes above straplike foliage. It performs as a striking focal bulb in borders and containers but is tender in colder climates where bulbs are often lifted or protected for winter.

Identification

Belongs to the amaryllis family and grows from bulbs that commonly produce offsets. Flowers are large, red and funnel shaped and usually appear on single scapes held above the foliage. Typical height from soil to top of the flower scape ranges from 12 to 24 inches which makes this a mid height accent in a planted bed.

Best uses and where to grow

Use Aztec Lily as a focal spring to early summer accent in mixed borders and in containers where good drainage can be ensured. It prefers full sun to part shade so place where blooms will be visible above lower plants. Exercise caution around pets and children because bulbs contain alkaloids that can cause gastrointestinal upset and skin irritation.

Planting and seasonal care

Choose a site with fertile well drained soil and space bulbs to allow clump formation roughly 12 to 18 inches apart so offsets have room to develop. Flowering occurs in spring to early summer depending on climate. In colder areas lift bulbs or provide heavy mulch for winter protection and leave foliage until it dies back to feed the bulb for next season.

Soil and light

Aztec Lily prefers rich well drained soil with a neutral to slightly acidic pH and avoids waterlogged conditions that lead to bulb rot. Provide full sun to partial shade and in hot climates give some afternoon shade to reduce leaf scorch. Reduced flowering and weaker foliage are common in deep shade.

Watering and effects

Keep soil evenly moist during the growing season to support vigorous foliage and abundant flowering. Excess moisture or standing water will cause bulbs to soften and rot and will reduce flowering the following season. If soil drains poorly grow bulbs in raised beds or containers to prevent moisture build up around the bulbs.

After flowering care and winter protection

Remove spent flower scapes to tidy the planting but allow foliage to die back naturally so bulbs store energy for the next season. In regions outside the plant hardiness range lift bulbs after foliage senescence and store dry and cool until replanting. In marginal zones a heavy mulch can protect bulbs but some loss may still occur in hard freezes.

Propagation and controlling spread

Propagate primarily by offsets and bulblets with division after dormancy to maintain vigor and to control clump size. Seed propagation is possible but takes longer to produce flowering sized bulbs. Spread is mainly by bulb offsets and increases slowly over years so aggressive naturalizing is uncommon.

Containers

Containers help provide the fertile well drained conditions Aztec Lily prefers and make winter lifting easier in colder climates. Use a free draining potting mix and place containers where scapes will be visible above surrounding plants. Containers also allow moving bulbs into brighter or more protected spots when required.

Frequently asked questions

How fast does Aztec Lily grow?: Growth is moderate with clumps enlarging slowly as bulbs produce offsets. Offsets usually reach flowering size faster than seed raised plants.
Are Aztec Lilies hardy?: They are generally treated as tender and are most reliably perennial in warm temperate areas. In colder climates lift bulbs or provide heavy winter protection.
How do I get them to flower?: Provide full sun to part shade fertile well drained soil and avoid deep shade. Adequate light and good drainage encourage strong scapes and better flowering.
Are they toxic to pets?: They contain alkaloids typical of Amaryllidaceae and bulbs can cause gastrointestinal upset and skin irritation. Check with regional poison control for species specific advice if ingestion occurs.
Will they naturalize and take over?: They form small clumps by offsets and spread slowly when left undisturbed. Division after dormancy keeps clump size under control.