Dawn Redwood (Metasequoia glyptostroboides Hu & Cheng) in the Almaty Botanical Garden

Metasequoia glyptostroboides Hu & W.C. Cheng (dawn redwood) is a monotypic species of considerable scientific interest as a relict plant. This paper provides a brief characterization of the species based on published literature and presents historical information on its introduction into the Almaty Botanical Garden. Phenological observations were conducted according to the methodology for monitoring coniferous plants developed by V.G. Rubanik. The requirements for cultivation and maintenance practices are described.

The results of long-term cultivation experiments carried out in the Almaty Botanical Garden confirm the possibility of growing M. glyptostroboides in open-ground conditions. Recommendations for its cultivation under the sharply continental climate of Almaty are provided. A comparative analysis of the species introduction into botanical gardens of the CIS countries was also conducted. Winter hardiness was assessed using the N.K. Vekhov scale.

Experiments involving winter protection of seedlings demonstrated frost damage in both protected and unprotected plants. During the first years after planting, annual shoots did not fully lignify before autumn and were therefore damaged by winter frosts. The terminal leader failed to develop properly, while lateral shoots continued to grow, resulting in a shrubby crown form. Over time, M. glyptostroboides adapted to local climatic conditions, and the leading shoot ceased to suffer frost damage.

The experimental data obtained indicate a good capacity for vegetative propagation. Although winter hardiness increases with age, frost resistance remains relatively low, which limits the species’ suitability for widespread use in urban landscaping. Nevertheless, the species is of considerable value for botanical gardens and private collections as a representative of an ancient relict lineage. It is highly ornamental due to its dense, delicate crown architecture and its bright autumn foliage coloration.

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