Getting it to bloom

Why won't my Herrenhausen Oregano bloom? (and how to make it flower)

Also called Herrenhausen Oregano, Ornamental Oregano, Herrenhausen Marjoram (Origanum laevigatum 'Herrenhausen').

More about herrenhausen oregano

About Herrenhausen Oregano

Origanum laevigatum 'Herrenhausen' · also called Herrenhausen Oregano, Ornamental Oregano · flowering

Herrenhausen Oregano is a striking ornamental perennial grown for its wiry purple-flushed stems and long-lasting display of tubular pink flowers within deep purple bracts from midsummer through autumn. Strongly attractive to bees and butterflies. Drought-tolerant once established; thrives in poor, well-drained soil. RHS Award of Garden Merit holder.

Plant type: flowering

Watch for — Failure to flower well: Insufficient sun or overly rich soil greatly reduces flower and bract production. Ensure full sun and poor-to-moderate fertility. Deadheading spent stems in late autumn and cutting back in spring rejuvenates flowering.

The reasons herrenhausen oregano isn't blooming

Almost every non-blooming herrenhausen oregano 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 herrenhausen oregano 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 herrenhausen oregano to flower

Maximise sun. Give herrenhausen oregano 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 herrenhausen oregano and get the feeding right with the herrenhausen oregano 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

Herrenhausen Oregano 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 herrenhausen oregano care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Herrenhausen Oregano blooming — frequently asked questions

Why won't my herrenhausen oregano flower?

Herrenhausen Oregano 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 herrenhausen oregano bloom?

Give herrenhausen oregano 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 herrenhausen oregano normally bloom?