Description

Condition: New

(M) KS15

Postage €2.00
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Ipomoea ‘Knowlians Black’
Botanical Name: Ipomoea purpurea
Type: Half-Hardy Annual Climber

Ipomoea ‘Knowlians Black’ is a truly striking black-purple morning glory with velvety trumpet-shaped blooms and a glowing pink throat. Each flower opens fresh in the morning, fading by evening, with new blooms appearing daily across the vine. Fast-growing and beautifully twining, this variety quickly covers arches, fences, trellises, and obelisks, bringing a touch of gothic elegance and mystery to any sunny garden space. A magnet for bees and humming insects, it combines exotic beauty with easy growth.

Plant Details

Type: Half-hardy annual
Height: 2.5–3m (with support)
Spread: 50–50cm
Flowers: July – October
Position: Full sun; moist but well-drained soil

Growing Information

Sow: March – May indoors
Germination: 10–20 days at 18–22°C (scarify seeds lightly for best results)
Transplant: Harden off and plant out once all risk of frost has passed
Spacing: 25–30cm apart
Care: Train up supports; deadhead to encourage continued flowering

Why You’ll Love It

Rare, deep black-purple blooms with glowing centres
Fast-growing climber — ideal for covering vertical spaces
Dramatic and unique addition to summer gardens
Attracts pollinators and adds instant height

Top Tip

Soak seeds overnight before sowing and lightly nick the seed coat to speed up germination — this helps ensure strong, uniform growth.

Perfect For

Arches, trellises & fences
Balcony or container-grown climbers
Evening gardens & dramatic plantings
Wildlife-friendly spaces

Hashtags

#IpomoeaKnowliansBlack #MorningGlory #BlackFlowers #DramaticBlooms #ClimbingPlants #GrowFromSeed #VerticalGardening #GothGarden #PollinatorFriendly #UnusualAnnuals