Getting it to bloom

Why won't my Yellow Heron's Bill bloom? (and how to make it flower)

Also called Yellow Heron's Bill, Silver Heronsbill, Golden Storksbill (Erodium chrysanthum).

More about yellow heron's bill

About Yellow Heron's Bill

Erodium chrysanthum · also called Yellow Heron's Bill, Silver Heronsbill · flowering

Erodium chrysanthum is a dense, tufted, evergreen perennial native to central and southern Greece, grown as much for its attractive mound of finely divided, silvery-grey, fern-like foliage as for its pale creamy-yellow flowers (occasionally pale pink on female plants of this dioecious species) that appear from late spring through summer. It is a classic alpine or rock garden plant that demands sharp drainage and a baking sunny position to replicate its native scree and rocky hillside habitat. The silvery foliage is its chief ornamental asset year-round, making it worthwhile even when not in flower. Erodium species are absent from the ASPCA Toxic Plants database, so toxicity status cannot be confirmed; it is classified as mildly-toxic as a precaution.

Plant type: flowering

Watch for — Dioecious plant — male and female needed for seed: E. chrysanthum is dioecious: separate male and female plants are needed for seed production, and some female plants produce pale pink rather than yellow flowers; if buying from seed, grow on multiple plants to ensure both sexes are represented.

The reasons yellow heron's bill isn't blooming

Almost every non-blooming yellow heron's bill 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 yellow heron's bill 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 yellow heron's bill to flower

Maximise sun. Give yellow heron's bill 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 yellow heron's bill and get the feeding right with the yellow heron's bill 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

Yellow Heron's Bill 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 yellow heron's bill care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Yellow Heron's Bill blooming — frequently asked questions

Why won't my yellow heron's bill flower?

Yellow Heron's Bill 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 yellow heron's bill bloom?

Give yellow heron's bill 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 yellow heron's bill normally bloom?