Getting it to bloom

Why won't my Cork-Stemmed Passionflower bloom? (and how to make it flower)

Also called Cork-Stemmed Passionflower, Corkystem Passionflower, Indigo Berry, Wild Passion Fruit (Passiflora suberosa).

More about cork-stemmed passionflower

About Cork-Stemmed Passionflower

Passiflora suberosa · also called Cork-Stemmed Passionflower, Corkystem Passionflower · flowering

Passiflora suberosa is a slender, fast-growing vine with distinctive corky-ridged stems, small greenish-cream flowers, and pea-sized fruits that ripen from green to deep purple-black. An essential butterfly host plant for Gulf Fritillary and Zebra Longwing, it thrives in full sun with minimal care and naturalistic gardens.

Plant type: flowering

The reasons cork-stemmed passionflower isn't blooming

Almost every non-blooming cork-stemmed passionflower traces back to one of these, roughly in order of how common they are:

Too little sun — most of these need full sun (or very bright light) to flower well; shade gives leaves, not blooms.
Too much nitrogen feed, driving lush foliage at the expense of flowers (very common with general or lawn feeds).
The plant has not been deadheaded, so it stops flowering once it sets seed.
Irregular watering — drought or waterlogging at the budding stage makes buds abort.
It is still too young or was checked by a transplant and is rebuilding before flowering.

Feeding cork-stemmed passionflower a high-nitrogen general feed and growing it in too little sun — you get a big leafy plant and almost no flowers.

The fix — how to get cork-stemmed passionflower to flower

Maximise sun. Give cork-stemmed passionflower the sunniest spot you have — for most bedding and fruiting plants, more direct light directly means more flowers.
Switch the feed. Move off high-nitrogen feeds and use a higher-potassium "bloom" or tomato-type feed as it comes into flower.
Deadhead regularly. Remove spent flowers often to keep it producing more rather than stopping to set seed.
Water consistently. Keep moisture even through budding and flowering — drought-then-flood swings make buds drop.

Light and feeding do most of the heavy lifting here. Dial in the spot with the light guide for cork-stemmed passionflower and get the feeding right with the cork-stemmed passionflower fertilising schedule — the wrong feed (too much nitrogen) is one of the most common silent reasons a healthy plant makes leaves instead of flowers.

Bloom season and what to expect

Cork-Stemmed Passionflower flowers across its growing season (mostly summer) and, kept fed and deadheaded, can bloom for many weeks or right up to frost.

Post-bloom care so it flowers again

Deadhead, keep feeding lightly, and many will rebloom; collect seed from the best plants at the end of the season if you want to grow them again.

For everything else this plant needs day to day, see the full cork-stemmed passionflower care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Cork-Stemmed Passionflower blooming — frequently asked questions

Why won't my cork-stemmed passionflower flower?

Cork-Stemmed Passionflower blooms on the season's growth given enough sun, warmth and the right feed — there is no cold or photoperiod trick, just good growing conditions and a bloom-leaning feed. The most common reason it is not happening: Too little sun — most of these need full sun (or very bright light) to flower well; shade gives leaves, not blooms.

How do I make cork-stemmed passionflower bloom?

Give cork-stemmed passionflower the sunniest spot you have — for most bedding and fruiting plants, more direct light directly means more flowers. Move off high-nitrogen feeds and use a higher-potassium "bloom" or tomato-type feed as it comes into flower.

When does cork-stemmed passionflower normally bloom?