Getting it to bloom

Why won't my Portuguese heath bloom? (and how to make it flower)

Also called Portuguese heath, Portugal heath (Erica lusitanica).

More about portuguese heath

About Portuguese heath

Erica lusitanica · also called Portuguese heath, Portugal heath · flowering

A graceful, tall evergreen shrub with plume-like bright green foliage and large branched racemes of sweetly scented white flowers opening from pink buds in winter and spring. Native to the western Iberian Peninsula and naturalised in south-west England. RHS H4 hardy; it requires sharply drained acidic soil and a sheltered, sunny position in cooler UK regions.

Plant type: flowering

Watch for — Winter frost damage: Although rated H4, young growth and flower buds can be caught by late frosts, particularly in exposed, inland gardens. Provide shelter from north and east winds; protect plants in their first winter with horticultural fleece during hard frosts.

The reasons portuguese heath isn't blooming

Almost every non-blooming portuguese heath 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 portuguese heath 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 portuguese heath to flower

Maximise sun. Give portuguese heath 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 portuguese heath and get the feeding right with the portuguese heath 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

Portuguese heath 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 portuguese heath care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Portuguese heath blooming — frequently asked questions

Why won't my portuguese heath flower?

Portuguese heath 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 portuguese heath bloom?

Give portuguese heath 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 portuguese heath normally bloom?