Black Star Gladiolus Bulbs

Preorder now. Ship dates are determined by your USDA zone.

If you’re ready to turn heads in the garden, Gladiolus 'Black Star' delivers with its rich, wine-red blooms kissed by hints of black. These tall, sultry spikes rise above a fan of sword-shaped foliage, giving your beds, borders, or containers a bold focal point that's impossible to ignore.

Plant these bulbs in early spring and let the summer show begin—each stem a little tower of floral intrigue.

Why You'll Love Black Star Gladioluses

• Deep, wine-red flowers with a black undertone for high-impact color
• Perfect for summer borders, cutting gardens, or bold container displays
• Grows 36–48" tall—ideal for the back of beds

Don't wait to order your 25-pack of Black Star Gladiolus bulbs, perfect for planting in early spring and enjoying in summer!

• When should I plant Black Star Gladiolus bulbs?
  Plant them in early spring after the danger of frost has passed. Gladiolus bulbs (also called corms) prefer warm soil—about 55°F or warmer—to kick off healthy growth and strong flower spikes by mid to late summer.
• Do Black Star Gladioluses need full sun?
  Yes, full sun is best. These dramatic bloomers thrive in at least 6–8 hours of direct sunlight daily. More sun = more blooms and stronger stems.
• Can I grow Black Star Gladiolus in containers?
  Absolutely. They’re a striking choice for large containers. Just make sure the pot is deep enough (at least 12–14") and well-draining. Group a few together for a vertical showstopper on patios or balconies.
• How do I keep them standing tall?
  These gladioluses can reach up to 48", so they may need staking, especially in windy spots. Planting them in groups helps provide mutual support. Another tip: bury the bulbs 4–6" deep to anchor them better.
• Do I need to dig up the bulbs after blooming?
  In zones colder than 8, yes—dig them up before the first hard frost, let them dry out, then store them in a cool, dry place over winter. If you're in a warmer zone, they can overwinter in the ground.