Getting it to bloom

Why won't my Spiny Germander bloom? (and how to make it flower)

Also called Spiny Germander, Balearic Germander (Teucrium subspinosum).

More about spiny germander

About Spiny Germander

Teucrium subspinosum · also called Spiny Germander, Balearic Germander · flowering

Teucrium subspinosum is a cushion-forming, spiny, evergreen shrublet endemic to the Balearic Islands (primarily Mallorca and Cabrera), where it grows on dry, stony limestone hillsides. Its twisted, white-woolly, spine-tipped stems bear small grey-green leaves and loose racemes of two-lipped, clear pink flowers in summer. It is one of the most ornamental compact germanders for rock gardens and scree beds, and demands full sun with near-perfect drainage. The plant is mildly toxic if ingested due to diterpene compounds typical of the genus.

Plant type: flowering

The reasons spiny germander isn't blooming

Almost every non-blooming spiny germander 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 spiny germander 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 spiny germander to flower

Maximise sun. Give spiny germander 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 spiny germander and get the feeding right with the spiny germander 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

Spiny Germander 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 spiny germander care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Spiny Germander blooming — frequently asked questions

Why won't my spiny germander flower?

Spiny Germander 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 spiny germander bloom?

Give spiny germander 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 spiny germander normally bloom?