Getting it to bloom

Why won't my Persian Violet bloom? (and how to make it flower)

Also called Persian Violet, German Violet (Exacum affine).

More about persian violet

About Persian Violet

Exacum affine · also called Persian Violet, German Violet · flowering

Persian violet (Exacum affine) is a compact, bushy gesneriad relative from Socotra grown as a flowering houseplant, smothered in small, fragrant, five-petalled blue-violet flowers with bright yellow stamens. It enjoys bright indirect light, evenly moist soil, warmth, and moderate humidity. Usually treated as an annual or short-lived pot plant, it blooms for months when deadheaded and not allowed to dry out.

Plant type: flowering

Watch for — Bud and flower drop: Usually from the soil drying out, cold draughts, or sudden temperature swings; keep evenly moist and in stable warmth.

The reasons persian violet isn't blooming

Almost every non-blooming persian violet 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 persian violet 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 persian violet to flower

Maximise sun. Give persian violet 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 persian violet and get the feeding right with the persian violet 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

Persian Violet 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 persian violet care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Persian Violet blooming — frequently asked questions

Why won't my persian violet flower?

Persian Violet 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 persian violet bloom?

Give persian violet 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 persian violet normally bloom?