Sweet flag needs a planting setup suited to its moisture-loving growth, with the species label helping to distinguish different forms. Check the depth and condition of the root zone rather than assuming all wetland plants grow alike.
Choose a wet position that suits the label
Sweet flags belong to Acorus, but their size and growing preferences vary. A small ornamental selection for a damp container should not automatically be submerged as deeply as a large marginal plant. Keep the nursery name with the pot.
Keep the root zone reliably moist
Use a medium appropriate for a damp planting and inspect the water level during warm, windy weather. A tray that was full yesterday may be empty today. Conversely, a decorative indoor vessel needs attention to cleanliness rather than repeated fertilizer additions to stale water.
Adjust light without scorching new leaves
Give useful light for steady leaf growth, introducing a sheltered plant to stronger exposure gradually. Brown tips can follow drying, salts or damaged roots; they do not identify one nutrient shortage.
Divide an established clump carefully
Separate healthy rooted sections when conditions support recovery. Replant promptly so exposed roots do not dry, and leave enough foliage and roots on each division to establish a functioning plant.
Related reading
Lotus Names Explained: Hehua and Lianhua