Comfrey has moderate disease resistance but can be susceptible to issues like leaf spot. Its vulnerability to insect pests depends on the variety, although most varieties are less resistant to pests. Concerning care, comfrey requires regular watering and fertilization, and yellow leaves should be pruned often. It is important to control pests and diseases when they appear and to harvest the plant in a timely manner. Comfrey is suitable for people who can devote some time and energy to regular care.
How to keep Symphytum Cordatum.
Light
Comfrey originates in habitats such as forest understories or rocky places that provide natural shade. It prefers partial sunlight but can also tolerate full sun when necessary. This flexibility enables it to do well under a range of sunlight conditions.
Temperature
Comfrey does best in moderate temperatures—about the same range people usually find comfortable. It flourishes in conditions that are neither overly hot nor overly cold. The principal problem with high temperatures is the danger of sunburn, so providing some shade in summer is recommended to avoid excessive heat. When temperatures fall, Comfrey becomes dormant. If you want it to grow continuously, you need to keep winter temperatures higher. Frost can injure the plant and should be avoided.
Fertilizer
To maximize comfrey's yield and flavor, supply ample nitrogen throughout the entire growth cycle, from pre-planting through harvest. Plants that are consistently well watered and fertilized develop plentiful, healthy leaves and are less bitter. Before planting, boost the soil with organic matter such as compost or manure, ideally applied 2 to 8 weeks ahead.
Botanical profile.
- Plant Type
- Herb
- Life Cycle
- Perennial
- Genus
- Symphytum
- Family
- Boraginaceae
- Hardiness Zone
- 4-9
- Mature Height
- 30 cm to 46 cm
- Mature Spread
- 61 cm
- Leaf Color
- Green
- Leaf Type
- Semi-evergreen
- Flower Color
- Pink, White
- Flower Size
- 1.02 cm to 2.03 cm
- Bloom Time
- Spring
- Planting Time
- Spring, Summer, Autumn
- Harvest Time
- Early summer, Mid summer
- Native Area
- Turkey
