Callitriche obtusangula: complete guide

Overview

Callitriche obtusangula is an elegant aquatic plant. This plant forms dense underwater mats and flowers May to October. Frost-hardy and suited for temperate climates.

Appearance

Plant reaches 5-15 cm depth with slender green stems. Tiny green flowers appear in waves during growing season in characteristic four-sided fruits.

Ideal Location

Thrives in full sun with 6-8 hours direct sunlight. Plant in shallow to moderate depth water (15-60 cm). Flexible for static and flowing water in natural ponds.

Soil

Not fussy on substrate. Sand (2-5 cm) preferred. Prefers neutral to alkaline water (pH 7.0-7.5). Nutrients not critical for this aquatic plant.

Watering

As aquatic plant needs regular water. Water movement promotes oxygen. Temperature: 5-20 C ideal. Light: 8/10. Humidity very high.

Pruning

Minimal maintenance. Moderate growth rate. If needed carefully thin in July-August. Regularly remove dead parts to prevent disease.

Maintenance Calendar

May-October: Regular monitoring and flowering. July-August: Carefully thin zones. November-April: Rest period with minimal maintenance.

Winter Hardiness

Frost-hardy to -5 to -10 C. Overwinters in shallow ponds if not completely frozen. Plant parts sink to bottom in winter.

Companion Plants

Potamogeton natans, Nymphaea alba, Ranunculus aquatilis, Sparganium erectum, Scirpus lacustris combine well.

Final Thoughts

Valuable for natural ponds. Frost hardiness and minimal care. Gardenworld.app recommends for underwater gardens. Safe and sustainable. Check garden centers.