Why your plants might stop growing in mid-Summer
and what to do about it
Q: Why some
tropical plants stop growing when it gets too hot? Aren't they supposed to like
the heat? Should I use more fertilizer during hot Summer?
You've been watching your tropical tree thrive all
spring. New leaves, steady growth, maybe even a flower or two. Then July hits,
and… nothing. The heat cranks up, and your once-busy plant just sits
there. No new shoots, no blooms, not even a twitch. If it feels like your plant
ghosted you - but don't worry! It's not dying. It's just hot!
Q: What
happens to tropical plants when it gets extremely hot?
When the heat hits, plants hit pause. In the peak of
summer, especially with temperatures above 90F, many tropical and subtropical
plants go into heat survival mode. Growth above ground may slow down or stop
entirely. It's not because you forgot to water or skipped a fertilizer dose -
it's just too hot. The plant's energy shifts underground, where roots may
still be growing. Think of it like a tropical version of a siesta - less
margarita, more mulch. This stage might last a few weeks or longer, depending on how
intense the heat gets. But the important thing is: it's normal.
Q: What NOT to
do?
Don't drown it in extra water. That leads to root rot.
Don't dump dry fertilizer on it. That can burn the roots or just get
flushed away. Use controlled release or liquid fertilizer dozed proportionaly
to the plant's water usage.
Don't prune aggressively, hoping to jolt it awake.
None of that helps - in fact, it can make things worse.
Q: What you
CAN do?
Water deeply in the early morning, and let the soil dry a bit between waterings.
Add mulch to help keep the root zone cool and reduce evaporation.
Provide temporary shade for potted plants or young trees.
Hold off on pruning or heavy feeding until you see new growth.
Just like you wouldn't run a marathon in a heatwave, your plant needs a
break too.
Q: Why you
shouldn't fertilize stressed plants with dry fertilizer?
Fertilizing seems like the obvious solution when a plant stalls, but in the
heat of summer, it can backfire. When temperatures soar, roots slow down, and absorption becomes inefficient. You
might pour in nutrients, but your plant can't use them - and what's worse,
any tender new growth that does emerge can get scorched or sunburned before it has a chance to harden.
Feeding a plant with strong fertilizers during a heatwave is like telling someone to sprint in a sauna. It's not just unhelpful - it's risky. That's why you need a fertilizer that’s engineered for hot weather - not just any slow-release formula.
Liquid Sunshine Boosters mild formulas are safe to use year around. Controlled release fertilizer like Green Magic are safe as well, just make sure to follow directions and dosage.
Q: Why Green Magic fertilizer
works in heat better that Osmocote?
Not all slow-release fertilizers are built for hot summer. Some popular brands might seem like a good choice - but they’re optimized for soil
temperatures around 70-75F. That's a mild Spring day in the South, but in real-world Florida or Arizona heat? Not even
close.
Here's the problem: Osmocote releases nutrients based on moisture, not temperature. When it's hot and humid - or worse, when you water heavily - it can dump too many nutrients at once. That nutrient surge can:
Burn your plant's roots
Force tender new growth that gets fried in the heat
Leach straight out of the pot, wasting both fertilizer and money
It's unpredictable, especially in containers that heat up faster than
ground soil. What you think is "slow-release" can behave more like a fertilizer
bomb.
Green-Magic, by contrast, uses a temperature-sensitive polyurethane
coating that responds gradually and consistently as the soil warms. That means:
No sudden nutrient spikes
No wasted runoff
And no risk of heat-triggered burn
It's designed to feed steadily and predictably - even when temps hit 90F and stay there. For potted tropical plants, that kind
of control is the difference between stressed and thriving.
Q: How does Sunshine Boosters help with daily plant
recovery in summer?
Once your plant begins to show signs of life again - maybe a new bud, or evening perkiness - it's safe to resume feeding. But skip the salts,
and reach for something gentler: Sunshine Boosters.
These amino-acid based liquid fertilizers are designed for daily use, even in containers during the hottest days. They enhance nutrient uptake, even when roots are stressed or sluggish. Unlike synthetic chelators like EDTA, Sunshine Boosters won't bind nutrients or burn root system. They stay gentle, available, and
effective. Learn more from this short video.
Use SUNSHINE Robusta for foliage support, or Ca-Support
PRO for strong structure and recovery. It's like hydration and nutrition in one - perfect for tropical plants fighting through summer heat.
Q: How can I help my plants during extreme heat?
Don't fight the heat - work with it. If your tree looks stalled
this summer, don't panic. It's following a rhythm older than all of us. Support it with smart watering, the right fertilizer combo, and a little patience. Before long, you'll see buds again - and know your plant made it through
the heat.
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When it gets this hot, even Macaron the cat gives up on pretending to
care. He flops sideways, paw in the air like he's surrendering to the sun, and
doesn't move for hours. Your plants? They’re doing the same.
That's not neglect. It's survival.
If your tropical plant suddenly stopped growing, it's not mad at you -
it's on summer strike. And the worst thing you can do is try to push it with a
shovel of cheap dry fertilizer.
In our next column we will tell you how to save plants from heat stress,
root burn, or just plain summer sulking. Macaron's Paw of Approval
🐾.
While you're at it - give your plants the gentle support they actually
need - and save!
Use code FERTI20 to
save 20% on fertilizers and garden supplies!
🌞 National treasure of Thailand: Golden Shower Tree
☀️ Cassia fistula - Golden Shower Tree is known as the national flower of Thailand. It is one of the most spectacular flowering trees for tropical and subtropical gardens.
☀️ From late spring through summer, it puts on a breathtaking display of golden-yellow flower clusters that hang in long, pendulous chains, often over a foot long. When in full bloom, the entire tree appears drenched in gold.
☀️ This deciduous tree drops its leaves in the dry season, allowing the brilliant flowers to take center stage. The leaves re-emerge after flowering, followed by long, dark brown seed pods that can reach up to two feet.
☀️ Cassia fistula is fast-growing, typically reaching 20-30 feet tall, and thrives in full sun with well-drained soil. It prefers a dry season to initiate heavy blooming and is tolerant of drought once established.
☀️ Aside from its beauty, the tree has cultural and medicinal significance in Asia in Ayurvedic medicine.
☀️ Fun facts:
In Thailand, it’s called Ratchaphruek and symbolizes royal identity.
Its golden flowers are often used in local festivals and ceremonies.
It attracts bees and butterflies and provides seasonal shade.