The Sprout. + Heat Pack. Kit is the complete starting point for the Seed Starter system — a powered thermal base and a sealed silicone germination chamber, bought together. Paper towels dry out, plastic bags go stagnant, and heat mats warm a wide area at whatever temperature they happen to run at. This kit lets you set an actual number: anywhere from 20°C to 35°C in 1°C steps, held steady for the entire germination cycle. Quick Bloom Lights is the official Australian and New Zealand distributor for Seed Starter (Pty) Ltd, so it ships from Sydney with local warranty support.
20–35°C
adjustable in 1°C steps
~1 W
to hold temperature (6 W warm-up)
USB-C
runs off a standard phone charger
AU/NZ stock
official distributor, local warranty
The three things a seed actually needs
Germination depends on warmth, moisture and oxygen held in a narrow band at the same time. Get one wrong and the seed stalls, sprouts unevenly, or rots. Most methods control one of the three and leave the other two to chance.
Warmth. Heat Pack. concentrates heat into a controlled thermal zone rather than warming a whole shelf. You set the target and it holds it, day and night, regardless of what the room is doing. That matters in Australia, where an unheated room swings several degrees overnight and drops well below germination range through winter.
Moisture. Sprout.'s sealed EU food-grade silicone chamber holds humidity around the seed without waterlogging it. The magnetic lid lifts for a look and snaps back without disturbing the microclimate — no unwrapping a paper towel and losing the moisture every time you check.
Oxygen. Seeds respire while they germinate. Sprout.'s airflow grooves let the chamber breathe passively, which is precisely what a zip-lock bag can't do — and stagnant air is what causes the mould and damping-off that ruins bag-method germinations.
Built to be added to, not replaced
Heat Pack. is the thermal engine for the whole Seed Starter system, and Sprout. is one of several skins that sit on top of it. Buy this kit and you own the part everything else runs on. GermiPad., the platform for the seedling and cutting stage, lands in Australia shortly and is sold without a heater on purpose — it slots straight onto the Heat Pack. from this kit. Buy the kit now and you're covered from seed through to established seedling with one heater, rather than buying a second device later.
Everything that touches the seed is silicone and dishwasher-safe, so it can be properly sanitised between runs. That's not a convenience point: damping-off pathogens carry over on unwashed equipment and are one of the most common reasons a second germination run goes worse than the first.
Simple enough for a classroom
There's no soil, no water reservoir, no nutrients, no lighting and nothing to plumb in. You moisten a cotton pad, place a seed, close the magnetic lid and plug in a USB-C cable — that's the entire method. It runs off a phone charger on a shelf.
That makes this kit unusually good for teaching. Because the seed sits between two cotton pads rather than buried in soil, the taproot is visible from the start, and lifting the magnetic lid to check doesn't disturb anything. It's also fast enough to hold attention — a suitable seed will often show a taproot within a day or two, where a cup of soil on a windowsill shows nothing for a week and a fair share never come up at all. The same simplicity suits community gardens, aged-care and therapy programmes, and anyone teaching propagation to complete beginners.
In the box: 1 × Sprout. silicone germination pod (choose Black Lid or Orange Lid, both with black body) · 1 × Heat Pack. USB-C thermal heater (20–35°C adjustable), supplied in its own box with the small key used to press the temperature buttons.
You'll also need: a USB-C wall adapter — 5 V, minimum 1.5 A, 20 W or higher recommended. Most modern phone chargers will do the job.
How to use it
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Set the temperature. Use the + and − buttons at the rear control ports, pressed with the small key supplied in the Heat Pack. box. Adjust in 1°C increments between 20°C and 35°C. The indicator light flashes with each press and confirms when the setting saves.
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Load the pod. Lay down a moistened cotton pad, add your seeds, cover with a second moistened pad.
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Assemble. Sit the Sprout. skin on top of Heat Pack. and close the magnetic lid.
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Plug in and leave it. Heat Pack. holds the set temperature for the whole cycle. Powered off and on again, it returns to your last saved setting automatically.
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Clean between runs. Remove Heat Pack. first, then wash the silicone in warm soapy water or put it through the dishwasher. Air dry before reassembly.
FAQ
Which Seed Starter product do I actually need?
If you're starting from scratch and want powered, precise temperature control, this kit is the one — it's the base the rest of the system builds on. If you already own a Heat Pack. and just want another chamber, buy the Sprout. pod on its own. If you want to germinate several seeds at once and don't want a powered heater at all, look at FlexiGerm., a 6-pod tray that runs on ambient warmth or your own heat mat.
Is the kit cheaper than buying the parts separately?
Yes, though not dramatically. Bought individually, Heat Pack. and Sprout. come to $169.90; the kit is $159.95. The better reason to buy the kit is that you get a matched pair that's designed to work together, rather than guessing whether your existing gear fits.
Can I run several Sprout. pods from one Heat Pack.?
No. Heat Pack. powers one skin at a time. To germinate in parallel, add another Heat Pack. Alternatively, if batch germination is what you're after, FlexiGerm. handles six pods at once without any powered heater.
How much does it cost to run?
Around 6 W while it warms up and roughly 1 W to hold temperature. That's less than most LED nightlights — you can leave it running for the full germination cycle without thinking about it.
What temperature should I set?
It varies by species, so check what you're sowing. As a general guide, most vegetable and herb seeds sit comfortably in the 20–25°C band, while chillies, peppers and other heat-lovers germinate faster nearer 28–30°C. Being able to dial in the exact number is the whole point — a fixed-output heat mat gives you whatever it gives you.
Is it suitable for a school or a complete beginner?
Yes. There's nothing to mix, plumb or wire — it runs from a USB-C phone charger, the silicone chamber is safe to pick up and look into, and the seed is visible through the whole process. That makes it far easier to teach with than soil, where nothing shows for a week. For classroom sets or bulk quantities, get in touch.
How long will germination take?
Much faster than most people expect, and that's the point of the system. With a suitable seed held at the right temperature, growers commonly see a taproot within 24–36 hours — against the 7–21 days a chilli seed can take in ambient conditions, or 5–10 for a tomato. Those conventional timelines are largely a symptom of unstable warmth: a seed sitting below its ideal temperature overnight is simply waiting, not growing. Hold it in range continuously and it gets on with it.
Results still vary with species and seed freshness, and stable warmth won't revive a dead seed. But across a batch of viable seed it removes the variable that causes both the long waits and the patchy, uneven results.
Do I need a special power adapter?
No, but check the rating. Any USB-C wall adapter supplying 5 V at a minimum of 1.5 A will run it; 20 W or higher is recommended for consistent output. An adapter isn't included, on the assumption most households have several already.
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