Getting it to bloom

Why won't my Ivory Primulina bloom? (and how to make it flower)

Also called Ivory Primulina, Ivory Chirita (Primulina eburnea).

More about ivory primulina

About Ivory Primulina

Primulina eburnea · also called Ivory Primulina, Ivory Chirita · flowering

Primulina eburnea is an evergreen, rosette-forming gesneriad with the widest natural distribution in its genus, found on mossy limestone karst cliffs and rock faces across southern China and northern Vietnam. The plant produces soft, hairy leaves and elegant tubular flowers with pale lavender to ivory tubes, darker insides, and a yellow throat. It is described as underrepresented in cultivation despite its handsome blooms and easy temperament. As with other Primulina species, it is not listed on the ASPCA toxic plant database, so it should be classified as mildly-toxic as a precaution.

Plant type: flowering

Watch for — Mealybugs in leaf axils: White cottony mealybug colonies hide in the tight leaf bases; dab infested areas with a cotton bud soaked in isopropyl alcohol and follow up with an insecticidal soap drench.

The reasons ivory primulina isn't blooming

Almost every non-blooming ivory primulina 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 ivory primulina 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 ivory primulina to flower

Maximise sun. Give ivory primulina 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 ivory primulina and get the feeding right with the ivory primulina 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

Ivory Primulina 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 ivory primulina care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Ivory Primulina blooming — frequently asked questions

Why won't my ivory primulina flower?

Ivory Primulina 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 ivory primulina bloom?

Give ivory primulina 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 ivory primulina normally bloom?