White-flowered moth mullein Verbascum blattaria f. albiflorum

Water

Moth mullein requires moderate watering, with more frequent watering during dry spells. Generally, it is advisable to water this plant once a week with about one gallon of water, ensuring that the soil remains moist but not waterlogged. During the hottest parts of summer, increase watering to twice a week if there hasn't been significant rainfall. In cooler temperatures or when the plant is not in active growth, reduce watering to every other week. Always check the top inch of the soil for dryness before watering to prevent overwatering.

Light

Moth mullein thrives in full sun to partial shade conditions. The ideal location for this plant would be a spot that receives at least six hours of direct sunlight each day. However, it can also do well in light dappled shade, especially in climates with very hot summers.

Temperature

Moth mullein can tolerate a wide range of temperatures and is hardy in USDA zones 5 through 8. It can survive minimum temperatures down to about -20°F and can endure high summer temperatures well above 90°F. The ideal temperature range for promoting good growth and flowering would be between 60°F and 80°F.

Pruning

Pruning moth mullein primarily involves deadheading spent flowers to encourage further blooming and prevent self-seeding. Prune the flower stalks back to the base of the plant after flowering. Regularly check for and remove any damaged or diseased foliage to keep the plant healthy. Pruning is typically done during the blooming season and as needed.

Cleaning

As needed

Soil

Moth mullein, the common name for Verbascum blattaria f. albiflorum, thrives in a well-draining soil mix amended with sand and compost to mimic its native habitat. A desired soil pH range is between 6.0 and 7.5. The best soil mix for moth mullein would be one part garden soil, one part sand or perlite, and one part compost for nutrients and improved drainage.

Repotting

Moth mullein does not need frequent repotting as it prefers to be left undisturbed. Repotting can be done every 2-3 years or when the plant outgrows its current container. Ensure that the new pot is only slightly larger than the previous one to prevent overwatering issues.

Humidity & Misting

Moth mullein, the common name for Verbascum blattaria f. albiflorum, is tolerant of a wide range of humidity levels and does well in average room humidity conditions. It does not require high humidity and can thrive in the typical ambient humidity found in most temperate regions.

Suitable locations

• Indoor

  Provide bright light and avoid overwatering for indoor moth mullein.

• Outdoor

  Plant in full sun with well-draining soil for outdoor moth mullein.

• Hardiness zone

  Moth mullein: 5-9 USDA

Life cycle

Verbascum blattaria f. albiflorum, commonly known as white moth mullein, begins its life cycle as a seed, which germinates in late spring after a period of cold stratification. Upon germination, the seedling develops into a rosette of basal leaves during its first year, establishing a root system to survive the winter dormancy. During the second year, the biennial plant sends up a tall flowering stalk, which can reach heights of 0.5 to 2 meters, bearing white flowers that attract pollinators and facilitate cross-pollination. After flowering from early to late summer, the plant produces capsules filled with tiny seeds. These seeds are dispersed by wind and animals, and can remain viable in the soil for several years. Completing its life cycle, the parent plant dies after seed dispersal, but its progeny ensure the continuation of the species.

Propogation

• Propogation time

  Spring to Summer

• The plant Verbascum blattaria f. albiflorum, commonly known as the Moth Mullein with white flowers, is most commonly propagated by seed. To propagate Moth Mullein, sow the seeds directly into the garden in late fall, allowing them to experience a natural stratification period during the winter. Alternatively, seeds can be sown indoors in early spring, about 6 to 8 weeks before the last frost. For indoor sowing, use a seed-starting mix in shallow trays or pots, barely covering the seeds with soil as they need light to germinate. Keep the soil evenly moist and at a temperature of approximately 70°F (21°C). Once seedlings have developed and are large enough to handle, Harden off the young plants slowly by exposing them to outdoor conditions over several days before transplanting them into their final position in the garden after the threat of frost has passed.