Getting it to bloom

Why won't my Columbine 'McKana Giant' bloom? (and how to make it flower)

Also called McKana columbine, Granny's bonnet, Aquilegia hybrid (Aquilegia x hybrida).

More about columbine 'mckana giant'

About Columbine 'McKana Giant'

Aquilegia x hybrida · also called McKana columbine, Granny's bonnet · flowering

A vigorous hybrid columbine producing large, long-spurred flowers in a wide range of bicolour combinations — red and yellow, blue and white, pink and cream — from late spring into summer. Excellent for cutting. All parts are toxic to pets and people due to cyanogenic glycosides, particularly concentrated in the seeds.

Plant type: flowering

Watch for — Powdery mildew: Very common after flowering in summer. Cut foliage back hard to encourage fresh growth; improve air circulation.

The reasons columbine 'mckana giant' isn't blooming

Almost every non-blooming columbine 'mckana giant' 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 columbine 'mckana giant' 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 columbine 'mckana giant' to flower

Maximise sun. Give columbine 'mckana giant' 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 columbine 'mckana giant' and get the feeding right with the columbine 'mckana giant' 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

Columbine 'McKana Giant' 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 columbine 'mckana giant' care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Columbine 'McKana Giant' blooming — frequently asked questions

Why won't my columbine 'mckana giant' flower?

Columbine 'McKana Giant' 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 columbine 'mckana giant' bloom?

Give columbine 'mckana giant' 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 columbine 'mckana giant' normally bloom?