PK by Bloom – Week 5 Flower Booster for Weight & Ripening

PK by Bloom – Week 5 Flower Booster for Weight & Ripening

BLOOM-PK-2

$59.50
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  • Handpicked by growers
  • Ships today
  • Real advice, real people
  • 5,000+ high yielding customers
  • 30-day returns*
  • Free shipping over $499*
  • Low stock - 4 items left
  • Backordered, shipping soon

Pairs well with

🌿 Bulk Up & Bloom Out

PK by Bloom is your go-to mid-flower bulker, hitting hard in week 5 to support serious fruit swelling and maturity. This potent 0–19.5–21 formula supplies phosphorus and potassium right when your plants need it most - during peak flower formation.

If your grow's been all show, now's the time to load up on that harvest weight.

🔹 Key Features

  • ✨ Precise 0–19.5–21 PK formula for ripening fruits and flowers

  • 🌰 Increases size, density & final weight of yields

  • ⏳ Applied during week 5 of flower for peak effectiveness

  • ✅ Compatible with all mediums: soil, coco, hydro

  • ⚖️ Accelerates plant maturation for tighter timelines

  • 🪧 No need to reduce base nutrients

⚛️ How It Works

During the fifth week of flower, plants require an elevated intake of phosphorus and potassium to finish building their buds. PK by Bloom steps in with a calibrated hit of P (19.5%) and K (21%), enhancing nutrient uptake and supporting vigorous flower swelling, hardness, and ripening.

Phosphorus boosts flowering enzymes and metabolic speed, while potassium improves nutrient transport, cell wall strength, and aroma/flavour development.

✂️ Application Rate

  • Add at 1ml per litre of nutrient solution

  • Apply during week 5 of the flowering cycle

📚 Where PK Fits in the Bloom Program

  • PRE – Weeks 2–3 of veg

  • ULTRA – Weeks 1–2 of flower

  • PHAT – Weeks 2–4 of flower

  • PK – Week 5 of flower

  • OOZE – Week 5 to flush

  • FINAL – Last 2 weeks + flush

🌟 The Grow Guys Tips

  • Use PK right after finishing your PHAT cycle to finish strong

  • Keep it simple: no need to drop your base nutes

  • Don't forget to check your EC levels to avoid overfeeding

  • Some variation in colour or consistency is normal due to organic ingredients

🌸 Finish With A Bang

PK by Bloom ensures your fifth week of flower is all about weight gain, maturity, and dense results.

👉 Get bulking with PK by Bloom – Shop Now at The Grow Guys!

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Growers First, Retailers Second

Welcome to The Grow Guys

We built The Grow Guys from the soil up — well, coco and perlite. Before we sold gear, we bought it, ran it, and learned the hard way what's worth the money and what ends up in the shed. That's the filter everything on our shelves passes through. No sales scripts, no rebadged junk, no telling you what you want to hear. Just gear we'd run ourselves and advice from people who actually grow. Chasing higher yields, tighter flowers, or your first harvest? You're in the right place.

Meet The Grow Guys

FAQs

Order by 2pm and it ships the same business day from Invermay, Tasmania.

Calculated at checkout by weight and destination. Free shipping over $499*.

Plain packaging, no branding. No one knows what's in your box.

30-day change-of-mind returns on unopened, unused products. A 10% restocking fee applies and return shipping is at your cost.

Call, email, or walk into the Invermay shop. You'll get a grower on the other end, not a script.

Unit 10/110 Gleadow Street, Invermay 7248. Mon–Fri 8:30am–5:30pm, Sat 9am–3pm.

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