Ammi majus which is also known as Bishops weed, Bishop’s weed, Bull wort, Greater ammi, Lady’s lace, Lace flower is a native of the Egypt, Nile River Valley. It belongs to the family unbelliferae. This plant’s seed is known to have the chemical constituent, Xanthotoxin.
It is a half hardy annual and half hardy biennial that can grow up to a height of one to three feet (30 to 90cm) and 12 inches (30 cm) wide.
This plant bears white lace-like flowers on umbels which bloom from late spring to early summer. The fruit has four prominent secondary ridges with which it is distinguished from others. This plant’s flowers are about 15 cm wide.
Phytophotodermatitis and hyper pigmentation are caused in the plant due to the presence of the chemical constituent, furanocoumarin. The leaves are lance shaped as well as the foliage is lanceolate. The leaves appear in two to three pinnate and are light green in color. These are part of wildflower garden.
Growing/Caring conditions for Ammi Majus:
– Sow the seed before the last frost and cover the seed.
– Sow the seed in spring.
– Space the seeds to about 10 to 40 inches (25 to 100 cm).
– The spacing should be 25 to 35 cm for smaller species and up to 100 cm apart for larger species.
– The seeds might take about one week to one month to germinate.
– The germination temperature is 60 to 65°F (16 to 18°C).
– Either germinate inside or outside.
– Growing indoors will need about seven or eight weeks in advance in order to transplant them outside during spring that is somewhere in April.
– Transplant outdoors after the last frost.
– This plant grows well in a loamy soils.
– This plant requires medium temperature and low rain.
– This plant needs full sunlight or light shade.
– This plant needs well drained system and rich and fertile soil.
– Keep the soil moist.
– Water well during prolonged dry periods.
– Mix an organic fertilizer during the planting.
– This plant is susceptible to Anthriscus, Caraway latent nepovirus, Parsley green mottle potyvirus, and Parsnip leaf curl virus, so take care from it.
– The sap of Ammi plants might be dangerous and so keep it out of reach of skin to avoid skin rashes.