Getting it to bloom
Why won't my Spotted Dead Nettle bloom? (and how to make it flower)
Also called Spotted Dead Nettle, Spotted Henbit, Purple Dragon Dead Nettle (Lamium maculatum).
More about spotted dead nettle
About Spotted Dead Nettle
Lamium maculatum · also called Spotted Dead Nettle, Spotted Henbit · flowering
A fast-spreading, shade-tolerant groundcover perennial with silver-marked leaves and two-lipped pink, purple, or white flowers from spring through summer. Unlike true nettles, it does not sting. Numerous cultivars offer varied leaf and flower colours. Excellent for brightening shaded areas, edging paths, or spilling over retaining walls. Hardy to zone 3.
Plant type: flowering
The reasons spotted dead nettle isn't blooming
Almost every non-blooming spotted dead nettle 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 spotted dead nettle 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 spotted dead nettle to flower
- Maximise sun. Give spotted dead nettle 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 spotted dead nettle and get the feeding right with the spotted dead nettle 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
Spotted Dead Nettle 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 spotted dead nettle care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.
Spotted Dead Nettle blooming — frequently asked questions
Why won't my spotted dead nettle flower?
Spotted Dead Nettle 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 spotted dead nettle bloom?
Give spotted dead nettle 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 spotted dead nettle normally bloom?
Spotted Dead Nettle 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 spotted dead nettle 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 spotted dead nettle flowering?
Feeding spotted dead nettle a high-nitrogen general feed and growing it in too little sun — you get a big leafy plant and almost no flowers.
Keep reading
- Spotted Dead Nettle care — the full brief (light, water, humidity, problems, pet safety)
- Spotted Dead Nettle light needs — usually the first thing to fix for flowers
- Spotted Dead Nettle 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 3229 bloom guides in the Growli library