Getting it to bloom
Why won't my Arrowwood Viburnum bloom? (and how to make it flower)
Also called arrowwood viburnum (Viburnum dentatum).
More about arrowwood viburnum
About Arrowwood Viburnum
Viburnum dentatum · also called arrowwood viburnum · flowering
Arrowwood is a vigorous, adaptable native shrub with flat white spring flowers, blue-black berries loved by birds, and reliable red-to-purple autumn colour. It thrives in sun or part shade across a wide range of soils, including wet and clay ground. Dense and rounded, it makes an excellent hedge, screen, or wildlife planting with minimal care.
Plant type: flowering
The reasons arrowwood viburnum isn't blooming
Almost every non-blooming arrowwood viburnum 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 arrowwood viburnum 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 arrowwood viburnum to flower
- Maximise sun. Give arrowwood viburnum 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 arrowwood viburnum and get the feeding right with the arrowwood viburnum 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
Arrowwood Viburnum 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 arrowwood viburnum care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.
Arrowwood Viburnum blooming — frequently asked questions
Why won't my arrowwood viburnum flower?
Arrowwood Viburnum 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 arrowwood viburnum bloom?
Give arrowwood viburnum 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 arrowwood viburnum normally bloom?
Arrowwood Viburnum flowers across its growing season (mostly summer) and, kept fed and deadheaded, can bloom for many weeks or right up to frost.
What should I do with arrowwood viburnum after it flowers?
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.
What is the single biggest mistake stopping arrowwood viburnum flowering?
Feeding arrowwood viburnum a high-nitrogen general feed and growing it in too little sun — you get a big leafy plant and almost no flowers.
Keep reading
- Arrowwood Viburnum care — the full brief (light, water, humidity, problems, pet safety)
- Arrowwood Viburnum light needs — usually the first thing to fix for flowers
- Arrowwood Viburnum fertilising — the right feed for buds, not just leaves
- Should I water my plant? The simple check
- Why is my plant wilting? Wet vs dry
- Underwatered plant — signs and rehydration
- Why won't my peace lily bloom?
- Why won't my jade plant bloom?
- Why won't my tomato bloom?
- All 639 bloom guides in the Growli library