9. Protect against sudden temperature drops
Even in May, unexpected cold nights can occur.
If the temperature drops significantly:
Move potted plants indoors temporarily
Cover outdoor plants if necessary
Pelargoniums are sensitive to frost, so a little protection goes a long way.
10. Create a routine you can maintain
The most important factor is not doing everything perfectly once – it’s consistency.
Create a simple rhythm:
Check the soil every few days
Fertilize regularly
Remove wilted heads weekly
Inspect for pests
Why May is so important
May is the transition period.
Planter:
Growing quickly
Responding to light and temperature
Preparing for peak flowering
If you support them in this phase, they will reward you for months.
If they are neglected early on, they may have difficulty catching up later.
What to expect when you do it right
When geraniums are cared for properly in May, you will notice:
More frequent flowering
Fuller, bushier plants
Stronger stems
Healthier leaves
And most importantly – continuous color well into the end of the season
Common mistakes to avoid
Even experienced gardeners sometimes fall into these traps:
Overwatering
leads to stress on the roots and fewer flowers.
Too much fertilizer
promotes leaves instead of flowers.
Ignoring wilted flowers
reduces flowering over time.
Keeping plants in shade
significantly limits flower production.
Final Thoughts
Pelargoniums don’t require complicated care – but they do respond to attention.
May is your chance to set them up for success. With a few consistent habits – proper light, balanced fertilizer, careful watering and regular maintenance – you can
