Getting it to bloom

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

Also called Hermit Primulina (Primulina anachoreta).

More about hermit primulina

About Hermit Primulina

Primulina anachoreta · also called Hermit Primulina · flowering

Primulina anachoreta (syn. Henckelia anachoreta) is a rosette-forming gesneriad native to limestone karst cliffs and shaded rocky outcrops from southern China to Indochina, where it grows as a calciphile in high-humidity, low-light crevices. It produces tubular pale lavender flowers on short scapes above a basal rosette of softly hairy leaves. The single most critical care point is avoiding overwatering — the plant must never sit in standing water. Primulina is not listed as toxic on the ASPCA database and is generally considered mildly-toxic at most given the absence of specific safety data.

Plant type: flowering

The reasons hermit primulina isn't blooming

Almost every non-blooming hermit 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 hermit 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 hermit primulina to flower

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

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

Hermit Primulina blooming — frequently asked questions

Why won't my hermit primulina flower?

Hermit 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 hermit primulina bloom?

Give hermit 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 hermit primulina normally bloom?