Size and height
Grows to about 50 cm tall. A strong summer bloomer that colours your garden in waves.
Gladiolus Callianthus
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Pre-orderdelivery from March 2027
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Direct from the growercarefully selected
Description
Callianthus Gladiolus. White flowers with a dark red or purple centre create a striking exotic bloom with crisp elegant contrast. The slender stems sway gently adding movement and lightness to the garden. The blooms feel airy refined and slightly mysterious perfect for naturalistic plantings summer borders or evening gardens where the white petals seem to glow.
Planting & flowering calendar
JanFebMarAprMayJunJulAugSepOctNovDec Planting Flowering
About this summer bloomer
What makes this summer bloomer special.
Hand-selected
Strong bulbs with plenty of reserve for fuller, sturdier flowers.
Straight from the grower
Straight from family growers, with the 100% Bloom Guarantee.
Good to know
The bulb in brief
| Flower type | Gladiolus Callianthus |
|---|---|
| Colour | White |
| Height | 50 cm |
| Planting months | Mar, Apr, May |
| Flowering months | Jul, Aug, Sep, Oct |
| Planting depth | 6 cm |
| Planting distance | 10 cm |
| Bulb size | 8-10 |
| Light needs | Full sun |
| Bee-friendly | Yes |
| Suitable as a cut flower | Yes |
Suits you
Where this flower shines.
Good for bees and butterflies
Full of nectar and pollen, so bees and butterflies find your garden effortlessly.
Cut for the vase
Cut a few stems and bring the garden indoors for your own bouquet on the table.
Deer resistant
Deer and roe deer usually leave these flowers alone, so your planting stays intact.
Long-lasting in the vase
Stays fresh for days in the vase, so your bouquet lasts longer than usual.
So many places
One bulb. So many places.
A border full of life
Plant in spring and enjoy a sea of colour in summer.
Your garden buzzes again
With the right varieties you give bees and butterflies food in summer.
Fresh flowers from your own garden
Cut a bunch whenever you like. Grown by you, and it shows.
A gift that keeps blooming
Give flowers for the whole summer, not a bunch that wilts.
100% Bloom Guarantee
Straight from the grower
Free shipping from €50
Free planting guide included
Selected by hand
Waarom Blom
Waarom Blom de juiste keuze is.
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Tuincentrum | Bouwmarkt | |
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| Persoonlijk advies | |||
| Breed assortiment | |||
| Topformaat bollen | |||
| Met de hand geselecteerd | |||
| Rechtstreeks van de kweker | |||
| Plantgids inbegrepen | |||
| 100% Bloeigarantie |
Our promise
100% Bloom Guarantee
Plant with peace of mind.
Frequently asked questions
Well prepared before you plant.
Plant in spring, once it no longer freezes. The calendar above shows the planting months for this variety.
Yes. The card on every bag tells you when and how deep to plant. And you have our 100% Bloom Guarantee: if a bulb does not flower in its first season even though you planted it on time and as the card says, you choose: a new bulb, credit or your money back.
Yes. All our bulbs are covered by the 100% Bloom Guarantee.
With you within 1 to 3 working days, with track and trace.
This variety does better in open ground than in a pot. Give it a spot in the border instead.
Good to know
Questions about this flower bulb.
Plant this flower bulb in Mar, Apr, May, once it no longer freezes.
Rule of thumb: plant a bulb two to three times as deep as the bulb is tall. The exact depth and spacing for this variety are on the planting card attached to the bag and in the planting guide we send along.
Fully grown, this flower bulb reaches about 50 cm. Useful to know for the order in your border: low at the front, tall at the back.
Not by itself, because this variety is not hardy here. Lift it in autumn, store it frost-free and plant it again in spring.
We offer a 100% Bloom Guarantee. Send us a message and we will send you new bulbs, or refund you in full.
Cool, dry and dark, in the opened bag so they can breathe. Do plant them as soon as possible, because bulbs are not a storage product.
