Jooni
Redwood
3 Species
Species
Fertilizing
Apply a high-nitrogen fertilizer in early spring to promote strong growth and enhance the health of young specimens. During the regular growing season, feed with a balanced organic fertilizer every two weeks. In summer, reduce fertilizer application to avoid encouraging uncontrollable growth. Pause fertilization during dormant months. For optimal results, use a gentle liquid fertilizer that provides a steady stream of essential nutrients to these fast-growing trees.
Placement
Redwood bonsai trees thrive best outdoors with full sun exposure. However, protect them from intense heat above 85°F (29.4°C) by using a shade cloth with 20% filtration. While outdoor growth is optimal, indoor cultivation is possible if you can provide sufficient direct sunlight, high humidity, and frequent watering. Place them on humidity trays filled with water and pebbles to simulate their naturally foggy habitat. During winter, protect trees from freezing temperatures below 32°F (0°C) by moving them to a greenhouse, cold frame, or unheated room.
Pruning
Redwoods naturally grow in a straight, upright form and don't require extensive branch pruning. However, control their vigorous growth by pruning twigs with long internodes 2-3 times annually: before new buds open in spring, after buds harden in early summer, or when new buds set in late fall/early winter. While Dawn redwood can be defoliated, never defoliate Coast redwood as their needles won't grow back. Wire branches in the same seasons as pruning, using guy wires for extra support when needed since older branches can be brittle.
Repotting
Repot your redwood bonsai every two years in mid to late spring when buds begin to swell and the tree is actively growing. These trees have vigorous root systems that quickly fill their containers. When repotting, remove some of the old soil using a root rake, but never strip away all soil as this can harm the tree. Trim the roots to control growth, but don't remove more than 1/4 of the total root system. Use fresh, well-draining soil that retains adequate moisture while allowing excess water to drain.
Watering
Redwoods are moisture-loving trees that require frequent watering to keep their soil consistently moist. Water thoroughly until it runs out of the drainage holes, ensuring the entire root ball is saturated. Monitor the top layer of soil and water as soon as it becomes slightly dry. During summer, expect to water at least twice daily - morning and late afternoon. In spring, check moisture levels twice daily as new growth emerges. Reduce watering frequency in autumn and winter to a few times weekly, but never let the root ball dry out completely. Consider using a moisture meter for precise monitoring.