September 2025 Delivery

Gladioli byzantinius Bulbs

One of those flowers that you always see but forget to plant? Now you don't have to worry about remembering to buy in the spring, as we offer the only autumn planted Gladioli. The stunning flowers are suitable for naturalising and appear along its long stem in vivid pink.

Height (cm): 60cm
Bulb Size (cm): 6+cm
Blooms: May/July

More information...

Planting Guide

Planting Guide

Species	Month	Depth	Spacing	Soil
Allium	Sept-Nov	3 x bulb height	15-30cm	Well-drained
Anemone	Sept-Nov	5cm	5-10cm	Any
Bluebell	Aug-Dec	5-10cm	10cm	Moist
Camassia	Sept-Nov	10cm	15cm	Moist
Chionodoxa	Sept-Nov	5cm	5cm	Well-drained
Crocus	Sept-Nov	5cm	5cm	Well-drained
Cyclamen	Aug-Oct	5cm	5cm	Well-drained
Daffodil & Narcissi	Sept-Oct	3 x bulb height	10-20cm	Well-drained
Erythronium	Sept-Nov	10cm	10cm	Moist
Freesia	Aug-Oct	5cm	7cm	Well-drained
Fritillary	Sept-Nov	10-15cm	20-25cm	Well-drained
Hyacinth	Sept-Nov	15cm	10cm	Well-drained
Ipheion	Sept-Nov	5cm	5cm	Well-drained
Iris	Sept-Nov	5cm	5cm	Well-drained
Muscari	Sept-Nov	5cm	5cm	Any
Puschkinia	Sept-Nov	5cm	5cm	Well-drained
Snowdrop	Sept-Dec	10cm	5cm	Moist
Triteleia	Sept-Nov	5cm	5cm	Well-drained
Tulip	Sept-Dec	10-15cm	10-15cm	Well-drained
Wildflowers	Sept-Dec	3 x bulb height	10-15cm	Moist
Full Sun Partial Shade Full Shade

Buy With Confidence

About Us Boston Seeds is an independent seed merchant founded in 2002 by Andrew Wallis, after 25 years working for some of Europe’s leading seed houses. Find out more about Boston Seeds.

Quality Here at Boston Seeds, we take quality seriously, and genuinely want every one of our customers to be delighted with their purchase and results. Learn more about our quality assurance.

Delivery We are proud to offer a wide range of products on a next day delivery service across most of the UK, from just a few grams to hundreds of kilograms.