Getting it to bloom

Why won't my San Diego Sage bloom? (and how to make it flower)

Also called San Diego Sage, Munz's Sage, San Miguel Mountain Sage (Salvia munzii).

More about san diego sage

About San Diego Sage

Salvia munzii · also called San Diego Sage, Munz's Sage · flowering

Salvia munzii is a bushy, semi-evergreen shrub native to the coastal sage scrub and chaparral of northern Baja California, Mexico, with a limited presence in San Diego County, California. It produces large, clear blue to lavender-violet flowers from late spring through summer on aromatic, hairy-stemmed branches with small grey-green leaves. The most critical care factor is providing full sun and sharp drainage in a hot, dry site; the plant is very drought tolerant once established and goes summer-dormant without supplemental watering. The genus Salvia is listed as non-toxic to cats, dogs, and horses by the ASPCA.

Plant type: flowering

The reasons san diego sage isn't blooming

Almost every non-blooming san diego sage 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 san diego sage 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 san diego sage to flower

Maximise sun. Give san diego sage 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 san diego sage and get the feeding right with the san diego sage 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

San Diego Sage 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 san diego sage care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

San Diego Sage blooming — frequently asked questions

Why won't my san diego sage flower?

San Diego Sage 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 san diego sage bloom?

Give san diego sage 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 san diego sage normally bloom?