Getting it to bloom

Why won't my Pale Beardtongue bloom? (and how to make it flower)

Also called Pale beardtongue, White beardtongue (Penstemon pallidus).

More about pale beardtongue

About Pale Beardtongue

Penstemon pallidus · also called Pale beardtongue, White beardtongue · flowering

Pale beardtongue is a low-growing, hairy perennial native to the dry prairies, sandy barrens, and open rocky woodlands of the eastern and central United States, ranging from Maine and Michigan south to Georgia and Arkansas. The entire plant is covered in soft white hairs, giving it a pale, silvery appearance, and it bears white tubular flowers with faint purple guidelines from late spring into midsummer. It is one of the smaller beardtongues, very tolerant of dry, nutrient-poor soils, and is an excellent pollinator plant for bees including bumblebees, carpenter bees, and mason bees. Toxicity to pets has not been formally assessed by the ASPCA; treat as mildly toxic out of caution.

Plant type: flowering

The reasons pale beardtongue isn't blooming

Almost every non-blooming pale beardtongue 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 pale beardtongue 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 pale beardtongue to flower

Maximise sun. Give pale beardtongue 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 pale beardtongue and get the feeding right with the pale beardtongue 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

Pale Beardtongue 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 pale beardtongue care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Pale Beardtongue blooming — frequently asked questions

Why won't my pale beardtongue flower?

Pale Beardtongue 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 pale beardtongue bloom?

Give pale beardtongue 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 pale beardtongue normally bloom?