August and September. In terms of the timing of the growth and fruiting of the loosestrife, the loosestrife fruiting is usually in the summer months of August and September, so the loosestrife ripens in August-September.

Rhombus is usually planted in temperate climates in wet mud, such as ponds, swamps. The climate should not be too cold, optimal at 25 degrees Celsius to 36 degrees Celsius. The depth of water should be 60 centimeters.