Getting it to bloom

Why won't my Penstemon 'Husker Red' bloom? (and how to make it flower)

Also called Husker Red penstemon, Husker Red beardtongue (Penstemon digitalis 'Husker Red').

More about penstemon 'husker red'

About Penstemon 'Husker Red'

Penstemon digitalis 'Husker Red' · also called Husker Red penstemon, Husker Red beardtongue · flowering

'Husker Red' is a hardy foxglove beardtongue prized for deep burgundy foliage and stems topped by white, foxglove-like tubular flowers in late spring to early summer. The 1996 Perennial Plant of the Year, it is drought-tolerant once established, loves full sun and sharp drainage, and draws hummingbirds and bees to upright 60-90 cm clumps.

Plant type: flowering

The reasons penstemon 'husker red' isn't blooming

Almost every non-blooming penstemon 'husker red' 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 penstemon 'husker red' 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 penstemon 'husker red' to flower

Maximise sun. Give penstemon 'husker red' 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 penstemon 'husker red' and get the feeding right with the penstemon 'husker red' 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

Penstemon 'Husker Red' 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 penstemon 'husker red' care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Penstemon 'Husker Red' blooming — frequently asked questions

Why won't my penstemon 'husker red' flower?

Penstemon 'Husker Red' 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 penstemon 'husker red' bloom?

Give penstemon 'husker red' 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 penstemon 'husker red' normally bloom?