Getting it to bloom

Why won't my The Rocket Ligularia bloom? (and how to make it flower)

Also called The Rocket ligularia, tall spiked ligularia (Ligularia × hessei 'The Rocket').

More about the rocket ligularia

About The Rocket Ligularia

Ligularia × hessei 'The Rocket' · also called The Rocket ligularia, tall spiked ligularia · flowering

'The Rocket' is a clump-forming bog perennial grown for its dramatic black stems carrying tall, narrow spires of lemon-yellow flowers in mid to late summer above large triangular, toothed leaves. It demands constantly moist, rich soil and shade from hot afternoon sun, wilting badly the moment its roots dry. A reliable damp-border and pondside specimen.

Plant type: flowering

Watch for — Floppy flower stems: Tall spikes can lean in wind or over-rich, shady conditions; site out of strong wind and avoid excess nitrogen to keep stems upright.

The reasons the rocket ligularia isn't blooming

Almost every non-blooming the rocket ligularia 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 the rocket ligularia 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 the rocket ligularia to flower

Maximise sun. Give the rocket ligularia 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 the rocket ligularia and get the feeding right with the the rocket ligularia 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

The Rocket Ligularia 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 the rocket ligularia care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

The Rocket Ligularia blooming — frequently asked questions

Why won't my the rocket ligularia flower?

The Rocket Ligularia 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 the rocket ligularia bloom?

Give the rocket ligularia 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 the rocket ligularia normally bloom?