Getting it to bloom

Why won't my Burser's Saxifrage bloom? (and how to make it flower)

Also called Burser's Saxifrage, Kabschia Saxifrage (Saxifraga burseriana).

More about burser's saxifrage

About Burser's Saxifrage

Saxifraga burseriana · also called Burser's Saxifrage, Kabschia Saxifrage · flowering

Burser's Saxifrage is a cushion-forming alpine perennial from the limestone screes of the eastern Alps. One of the earliest saxifrages to bloom, it produces large, solitary white or pale-yellow flowers on short red stems in late winter to early spring, emerging from tight mounds of grey-green, spine-tipped leaves. Ideal for alpine troughs.

Plant type: flowering

Watch for — Aphid infestation: Greenfly congregate around new growth and flower buds in spring. Remove by hand or treat with a dilute insecticidal soap spray, being careful to avoid saturating the cushion.

The reasons burser's saxifrage isn't blooming

Almost every non-blooming burser's saxifrage 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 burser's saxifrage 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 burser's saxifrage to flower

Maximise sun. Give burser's saxifrage 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 burser's saxifrage and get the feeding right with the burser's saxifrage 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

Burser's Saxifrage 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 burser's saxifrage care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Burser's Saxifrage blooming — frequently asked questions

Why won't my burser's saxifrage flower?

Burser's Saxifrage 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 burser's saxifrage bloom?

Give burser's saxifrage 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 burser's saxifrage normally bloom?