Paint your client's gardens with incredible color that towers high and will surely catch their eyes! An award-winning variety with flamboyant ruffles and a rich blue color, Open Sea boasts an abundance of large 6-6½" blooms that are ideal for back borders, mass plantings and dramatic cut flower arrangements. It grows to 47" tall and creates a statuesque display that acts as a living backdrop for shorter, colorful mid spring bloomers.
Hardiness Zones 4-9
Mature Height 47 inches
Bloom Time Mid spring
Light Requirements Full Sun, Half Sun / Half Shade
Glaucous-green, sword-like fans of stiff upright leaves with some dying back in colder climates in winter.
18 - 24 inches
Set rhizome so bottom half is below ground level. Firm well and water thoroughly. Plant where they will get at least 5 hours of sun per day.
Well drained preferred. Quite tolerant of a wide range of soils.
Acidic Soil, Clay Soil, Loamy Soil, Sandy Soil
Remove spent flower stems after blooming. In late fall, cut back foliage to 6" fans. Clean plant debris before winter to prevent borers overwintering.
Mulch in colder climates (2" layer) and remove in early spring before growth starts.
Set rhizome so bottom half is below ground level.
Average water needs. Water regularly, do not overwater
Once or twice per year. In spring and summer.
K. van Bourgondien times its shipments from Holland so that bulbs arrive at the proper planting time
climatic conditions) for each area of North America.
We take advance reservations, and then just as soon as the crops are
harvested, our staff of K.
van Bourgondien experts makes an on-the-spot selection of the finest bulbs available to fill those
We will pack and ship your order based on the following schedules.
Orders for gift certificates will be shipped immediately.
Due to hot weather conditions, we are unable to ship any plant items from late June through August.
General merchandise will be shipped with your plant order.
The type of product you order or the weather in our area or yours may affect the anticipated
schedule.Large orders may be shipped in more than one
package.Your order confirmation will have an estimated shipping time.When your order is actually shipped you will be sent
an updated shipping estimate.You may check your order status at any time on this website using your email or account number
provided on your order confirmation.Please note that we cannot ship outside of the 48
contiguous states. Click here for zone map.
Questions & Answers
RECEIVE OUR CATALOG
Get the latest catalog and updates about spring bulbs and gardening.
Sign up for emails
You'll get the latest deals and gardening tips from K. van Bourgondien.