Roselle

Family: Malvaceae Tropical shrub

Tart-sweet roselle calyces unfurl into jewel-toned cups—deep garnet with a velvety, lightly puckered surface that feels almost velour-soft in the hand.

As the plants mature (about 120 days), the fleshy calyxes develop a bright, cranberry-like tang with a gentle floral lift, ideal for crafting refreshing herbal beverage infusions. Grow this tropical showpiece for its dramatic, fruiting calyx display and boldly flavored cupfuls that steep into ruby color and lively character.

Light: Full SunMaturity: 120 DaysHabit: Upright

Planting schedules and alerts are optimized for Columbus (Zone 6b).

Crop Dates

Milestone	Date
Start Indoors	Mar 14th
Last Frost	Apr 25th
Transplant / Sow Outdoors	Jun 20th
Harvest Begins	Oct 18th
Harvest Ends	Oct 16th

Crop Details

Trait	Value
Days to Maturity	120
Sun Requirements	Full Sun
Growth Habit	Upright
Support Needed	Upright
Planting Depth	Normal
Germination Temp (°F)	75
Min Soil Temp (°F)	65
Min Night Temp (°F)	55
Harden Off (days)	10

Culinary Notes

Chef's Note

Roselle’s calyxes steep fast and turn drinks jewel-red while carrying a clean, puckering cranberry bite with a soft floral backnote. Use it as your tart-sweet foundation—think ruby hibiscus energy drinks, not muted tea.

Best Uses

cold or hot herbal infusions that steep into ruby tartness
concentrated syrup for cocktails and desserts
gelled roselle “jam” to spoon over yogurt or cheesecake
tart garnish—use calyces for color and a quick, sharp tang

Flavor Profile

bright cranberry-like tartness gentle floral lift slight sweetness wrapped in a lightly puckered, juicy bite

Kitchen Pairings

lime ginger honey vanilla sparkling water

Frequently Asked Questions

What pest or disease most commonly affects Hibiscus sabdariffa (roselle), and how can I manage it?

Roselle commonly suffers from aphids and whiteflies, especially during warm weather, which can cause leaf curling and honeydew. Rinse plants with a strong stream of water, then spray insecticidal soap and repeat every 5–7 days until pests are gone. If you see fungal leaf spotting, improve airflow by spacing plants and remove badly spotted leaves to reduce spread.

How often should I water roselle during the main growing phase?

During active growth, keep the root zone consistently moist but not waterlogged—about 1–2 inches of water per week depending on heat and soil texture. Water deeply when the top 1 inch of soil dries out, since roselle forms best with steady moisture while avoiding saturated conditions that can promote root diseases. Mulch around the base helps maintain even soil moisture for this ~120-day crop.

How do I know when Hibiscus sabdariffa (roselle) is ready to harvest?

Harvest roselle calyces (the fleshy red seed pods) when they have fully developed and turned deep red and firm, typically near the end of the 120-day season. Pick individual calyces by hand as they ripen; they’re usually ready a few weeks after flowering. If calyces are still pale or thin, leave them on the plant a bit longer for better color and flavor.