Trimezia longifolia is a rhizomatous perennial with sword-shaped leaves and yellow, iris-like flowers that bloom in summer.
At-a-glance light, water, soil, and growing conditions from plant data
Bright, indirect light
75% intensity
Prefers morning sun or bright, filtered light. Avoid intense afternoon sun which can scorch leaves.
Moderate to high during growing season, low during dormancy
75% intensity
Keep soil consistently moist but not waterlogged; allow top inch to dry between waterings.
Well-drained
50% intensity
Average to warm
50% intensity
Thrives in temperatures between 18-27°C. Protect from frost; bring indoors if temperatures drop below 10°C.
Moderate during growing season
50% intensity
Apply balanced liquid fertilizer diluted to half strength every 4-6 weeks from spring to early autumn.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
| Edible | No |
Unknown
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Trimezia longifolia prefers consistently moist soil but dislikes waterlogging. Water thoroughly when the top 2-3 cm of soil feels dry.
Reduce watering significantly during the cooler, dormant winter months, allowing the soil to dry out more between waterings. Ensure good drainage to prevent root rot.
Prune Trimezia longifolia primarily to remove dead, damaged, or yellowing foliage. Cut back spent flower stalks to maintain a tidy appearance and encourage further blooming.
Pruning is best done after flowering or in early spring before new growth emerges.
Trimezia longifolia can be propagated by division of rhizomes or by sowing seeds. Divide established clumps in spring, ensuring each division has healthy roots and shoots.
Seeds should be sown fresh in a well-draining seed-starting mix and kept warm and moist.
Repot Trimezia longifolia every 2-3 years or when it becomes pot-bound. Spring is the ideal time for repotting. Use a well-draining potting mix, such as a combination of potting soil, perlite, and sand.
Choose a pot that is only slightly larger than the current one.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Trimezia Longifolia (Trimezia longifolia)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Liliopsida |
| Order | Asparagales |
| Family | Iridaceae |
| Genus | Trimezia |
| Species | Trimezia longifolia |
Similar in genus Trimezia
Answers based on plant encyclopedia data
