Description
Marumi kumquat is widely regarded as one of the most visually striking kumquats to grow. We just love this variety. The canopy forms naturally into a dense, rounded shape, the leaves are closely spaced and full, and by winter the branches are often loaded with glowing, round fruit. It’s as much a presence as it is a producer.
The fruit is eaten whole—no peeling—with a sweet, aromatic skin and citrus flesh that noticeably softens as it reaches full color. Harvest timing matters with Marumi: fruit allowed to hang longer develops a smoother, more integrated flavor. Combined with its productivity and compact size, this makes Marumi especially rewarding for patio growers and anyone who values both form and function.
Overview
- Round kumquat eaten whole.
- Flavor mellows as fruit fully colors and hangs on the tree.
- Late fall through winter ripening.
- Dense, rounded canopy with abundant fruit set.
- Self-fertile.
Growing Details
Latin Name: Citrus japonica ’Marumi’
Site and Soil: Full sun; well-drained soil
Rootstock: 1-gallon trees on Flying Dragon; larger sizes on C-35
Hardiness: Best suited to USDA Zones 8–11; hardy to around 22°F with protection once established
Bearing Age: Often fruits immediately; grafted trees may produce in their first season
Size at Maturity:
• Flying Dragon: Typically 4–6 ft tall and wide
• C-35: Typically 8–12 ft tall and wide
Note: Trees grown in containers remain smaller and are easily maintained with pruning.
Bloom Time: Spring to early summer (timing varies by climate and culture)
Ripening Time: Late fall through winter
Pollination Requirements: Self-fertile
Pests & Diseases: Similar to other citrus; good airflow and drainage reduce issues
Additional Notes
- Grower’s Insight: Marumi’s naturally dense, rounded canopy and heavy fruit set give it a uniquely full appearance—one of those citrus trees that looks intentionally shaped even without frequent pruning.
- Regional Insight: Performs especially well in warm citrus regions and excels as a container-grown citrus in cooler climates when winter protection is provided.
- Harvest Tip: Let fruit reach full color and hang longer on the tree—Marumi’s flavor softens noticeably with maturity.
- Explore more kumquat varieties in our collection: Kumquats
