Getting it to bloom

Why won't my Buddleja globosa bloom? (and how to make it flower)

Also called orange ball tree, globe butterfly bush (Buddleja globosa).

More about buddleja globosa

About Buddleja globosa

Buddleja globosa · also called orange ball tree, globe butterfly bush · flowering

Buddleja globosa, the orange ball tree, is a large semi-evergreen Chilean and Argentine shrub grown for its unusual round orange-yellow flower clusters in early summer, beloved by bees and butterflies. Unlike B. davidii it flowers on old wood and rarely self-seeds, making it a non-invasive, characterful choice for a sunny sheltered spot.

Plant type: flowering

Watch for — Poor flowering after hard pruning: Unlike B. davidii, it blooms on old wood, so spring hard-pruning removes the flower buds. Prune only lightly after flowering.

The reasons buddleja globosa isn't blooming

Almost every non-blooming buddleja globosa 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 buddleja globosa 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 buddleja globosa to flower

Maximise sun. Give buddleja globosa 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 buddleja globosa and get the feeding right with the buddleja globosa 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

Buddleja globosa 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 buddleja globosa care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Buddleja globosa blooming — frequently asked questions

Why won't my buddleja globosa flower?

Buddleja globosa 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 buddleja globosa bloom?

Give buddleja globosa 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 buddleja globosa normally bloom?