Getting it to bloom

Why won't my Purple Poppy Mallow bloom? (and how to make it flower)

Also called Purple poppy mallow, Winecup, Buffalo rose, Poppy mallow (Callirhoe involucrata).

More about purple poppy mallow

About Purple Poppy Mallow

Callirhoe involucrata · also called Purple poppy mallow, Winecup · flowering

Callirhoe involucrata is a sprawling, drought-tolerant perennial native to the dry prairies and plains of central North America from Minnesota and Nebraska south through Kansas and Texas, where it trails across sandy or rocky soils in full sun. Its magenta-to-wine-purple, cup-shaped flowers are open from late spring through summer and close in the evening, earning it the common name winecup. The key to success is its deep, fleshy taproot — sometimes as thick as 5 cm — which stores moisture and fuels the plant through drought, but makes transplanting or division of established plants almost impossible; plant it in its permanent position while young. Multiple reliable native-plant garden sources list it as safe for pets, and its roots and young shoots are recorded as edible.

Plant type: flowering

The reasons purple poppy mallow isn't blooming

Almost every non-blooming purple poppy mallow 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 purple poppy mallow 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 purple poppy mallow to flower

Maximise sun. Give purple poppy mallow 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 purple poppy mallow and get the feeding right with the purple poppy mallow 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

Purple Poppy Mallow 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 purple poppy mallow care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Purple Poppy Mallow blooming — frequently asked questions

Why won't my purple poppy mallow flower?

Purple Poppy Mallow 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 purple poppy mallow bloom?

Give purple poppy mallow 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 purple poppy mallow normally bloom?