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Your chicks need the right feed between starter and layer to build strong bones, feather out properly, and gain weight steadily—and the protein level in that grower feed makes the difference. This guide compares seven grower feeds by their protein percentages, ingredient sourcing, and how easily your flock can eat them, so you can choose the right bag without guessing.
I’m Rikta — the founder and writer behind FitlyFast. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
Weighing protein levels, ingredient transparency, and how well chickens take to each formula, this rundown of the best chicken grower feed helps you match the right bag to your flock’s growth stage and your feeding style.
Our Picks at a Glance
How To Choose The Best Chicken Grower Feed
Grower feed is the bridge between high-protein chick starter and the lower-protein layer ration. Getting this phase right sets up your pullets for strong frames and, later, reliable egg production, so the choices you make now have a long tail.
Protein: the number that drives everything
Grower feeds typically land in the 17% to 20% protein range. Higher protein supports faster muscle and feather development, which matters most for meat birds, while a slightly lower level keeps replacement pullets from growing too fat before they start laying.
Ingredients: what “organic” and “soy-free” really mean
Certified organic guarantees no synthetic pesticides, fertilizers, or GMOs in the grain, while non-GMO is a separate claim about genetic modification alone. Corn-free and soy-free formulas exist for keepers who suspect those grains cause digestive or allergy issues in their flock.
Form: crumble, pellet, or whole grain
Chicks and young birds handle fine crumble easily, pellets cut down on waste because birds can’t pick out favorite pieces, and whole grain mimics natural foraging and is ideal for fermenting. Your choice here changes how much ends up in the crop versus scattered on the ground.
Quick Comparison
| Model | Best For | Protein | Form | Weight | Amazon |
|---|---|---|---|---|---|
| Scratch and Peck Grower Mash★ Best Overall | Organic whole grain feeding | 17% | Mash | 10 lb | Amazon |
| CountryMax Starter Grower CrumbleBest Value | Large flocks on a budget | 18% | Crumble | 50 lb | Amazon |
| Small Pet Select Grower Feed | Corn-free pellet feeding | 18% | Pellet | 20 lb | Amazon |
| Kalmbach Organic Starter Grower | Organic with digestive support | 20% | Crumble | 35 lb | Amazon |
| New Country Organics Grower | Broilers in hot climates | 19% | Broiler | 25 lb | Amazon |
| Purina Organic Starter-Grower | Balanced organic granules | 18% | Granule | 35 lb | Amazon |
| Mile Four Organic Grower | Whole grain fermentation | 18% | Whole Grain | 23 lb | Amazon |
In-Depth Reviews
1. Scratch and Peck Feeds Grower Mash
Our pick — over 4.5★ from 850+ verified ratings; the strongest balance of quality and price.
The whole-grain mash that turns feeding time into a visible health check for your flock.
What wins people over here is the ingredient transparency — you can see each individual grain in the bag, which makes it easy to trust exactly what your birds are eating. It’s certified USDA Organic and Non-GMO Project verified, and it skips both corn and soy entirely, so it suits keepers avoiding those common fillers.
The 17% protein level in this 10-pound pouch supports steady growth for chicks and ducks from 8 to 20 weeks. Because it’s a mash rather than a pellet, it’s built for fermenting — a practice owners say improves digestion and cuts down on both waste and feed costs while producing well-formed, low-odor droppings.
One honest trade-off: some birds had a hard time eating the peas mixed into the grain, and a few owners note the powdery residue at the bottom of the bag. The sturdy, thick resealable bag is a genuine convenience, letting you store the feed with confidence between refills.
What the flock loves
- Visible whole grains confirm what’s inside the bag
- Corn-free and soy-free formula for sensitive birds
- Fermentable mash stretches your feed budget
- Strong resealable bag keeps feed fresh
What to weigh up
- Small 10 lb pouch means more frequent reorders
- Peas can be tricky for some birds to eat
- Powdery residue collects at the bottom
Reach for this if: you want to see the grains your birds eat and prefer a formula you can ferment for better digestion.
Look elsewhere if: you need a massive single bag for a large flock that goes through feed fast.
2. CountryMax 50LB Chick Starter Grower Crumble
A 50-pound crumble that keeps a five-hen flock fed for weeks without emptying your wallet.
For keepers transitioning chicks off starter feed, the sheer size here is the whole story — this bag holds 50 pounds, a full five times the weight of the Scratch and Peck mash above. That’s enough to carry a small flock comfortably through the grower stage and into egg-laying feed, which is exactly how many owners use it.
The 18% protein level supports steady weight gain, muscle development, and feathering without over-accelerating growth. It’s non-medicated, which gives you flexibility in your care routine, and the crumbled texture is designed for easy eating with minimal choking risk for young birds.
Chicks love it, digestion stays clean, and the 50-pound bag offers better value than multiple small pouches. One keeper with five hens called it exactly what they needed to bridge to layer feed, and the convenience of doorstep delivery removes a trip to the feed store.
Big-bag economics: at 50 pounds with an 18% protein crumble, this stretches further per dollar than any other pick here, making it the smart choice for cost-conscious flocks.
Best for: backyard keepers with several birds who want one massive bag that lasts and delivers fast.
The catch: it’s a bigger commitment than a small pouch, so it suits flocks that will actually get through 50 pounds before it loses freshness.
3. Kalmbach Feeds 20% Organic Chick and Meatbird Grower
A certified-organic crumble with a proprietary gut-health blend that has chickens lining up at feeding time.
That extra protein makes it a strong fit for both replacement pullets needing a solid frame and meatbirds where rapid muscle development is the goal.
The defining feature here is LifeGuard, a proprietary blend of prebiotics, probiotics, essential oils, and enzymes aimed at supporting digestive and immune health. It’s also fortified with essential amino acids and a complete vitamin and mineral package, all inside a USDA Certified Organic formula.
Owners describe their chickens going crazy for this feed and waiting anxiously at feeding time — the kind of enthusiasm that tells you the birds genuinely prefer it. One keeper noted adult chickens prefer it over other organic brands, and the fine crumble texture works especially well for bantams and smaller breeds.
Why it stands out
- Highest protein here at 20% for growth and muscle
- LifeGuard digestive support blend is unique
- Fine crumble ideal for bantams and small breeds
Before you buy
- Sits at a premium price point
- 35 lb bag is mid-sized for larger flocks
Choose this for: keepers who want the highest protein with certified-organic ingredients plus digestive support in every bite.
Think twice if: you’re on a strict budget and a 20% level is more than your slower-growing pullets actually need.
4. Mile Four Organic Grower Whole Grain
A whole-grain grower with visible texture, grown on US family farms and built for fermenting.
Mile Four builds its reputation on sourcing — every grain is certified organic and non-GMO, grown on local US family farms, and milled fresh. The formula is corn-free and soy-free, two fillers some keepers believe contribute to vitamin and mineral deficiencies over time.
The 18% protein whole-grain form appeals to chickens’ natural foraging instincts, making it a top choice for fermenters. Owners who ferment report their birds go crazy for it, eating the Mile Four first and leaving other feed behind, and one keeper noted deep golden yolks and strong eggshells as a result.
The trade-off is real, though. This 23-pound bag carries a heavy premium, and not every flock agrees — some owners had chickens that simply refused it and required mixing with a cheaper feed to get through the bag. Delivery time has also drawn complaints from those who needed it urgently. The sturdy, compostable bag with a handle does make carrying and pouring genuinely easier.
The high-end whole grain: its visible, fermentable texture appeals to picky eaters who judge by sight, but the higher price and the chance your flock rejects it make this a premium gamble—know that before you buy.
Reach for this if: you ferment feed for your flock and want the highest-quality US-grown whole grains you can find.
Look elsewhere if: your chickens are known to be finicky or you need feed delivered on a guaranteed tight schedule.
5. New Country Organics Organic Grower/Broiler Feed
A soy-free grower that trims protein slightly to keep broilers on a steady, healthy growth curve.
New Country Organics takes a different angle: this grower is tailored for chicks beyond 4 weeks of age and delivers 19% protein, a deliberate 2% lower level than typical chick starter to encourage controlled weight gain. The logic is that steady, well-balanced development beats rapid growth that outpaces the frame.
It’s certified organic and non-GMO, enriched with probiotics, and formulated with a low starch content that makes it a smart pick for hot climates where birds struggle to stay comfortable. The 25-pound paper bag keeps handling manageable for smaller operations.
Owner feedback splits clearly on taste versus powderiness. What wins people over is the taste — buyers report their chickens look great and lay beautiful eggs on it. The recurring gripe, though, is powderiness: several owners note too much of the bag arrives as dust their birds won’t touch, and a couple solved this by blending it into a thick mash to guarantee full consumption.
The strengths
- Soy-free certified organic formula
- Controlled 19% protein for steady growth
- Low starch suits hot-weather flocks
Watch out for
- High powder content some birds reject
- 25 lb bag stores less than budget rivals
Best for: broiler keepers in warm climates who want a soy-free organic feed with controlled protein.
Not ideal if: your flock refuses dusty feed and you’d rather not blend mash to make it acceptable.
6. Purina Organic Starter-Grower
A granule-form grower from a trusted national name, fortified for bright beaks and healthy growth.
Purina brings big-brand reliability to the organic aisle with this certified USDA Organic starter-grower. The formula delivers 18% protein and is enhanced with methionine, an essential amino acid that supports muscle and skeletal development through the growing phase.
What sets this one apart visually is the added marigold extract, which promotes brightly colored beaks and vibrant plumage. It also contains the optimal combination of the 38 required nutrients chicks need to grow at a proper pace, plus vitamins A, B, D, E, and K for overall health.
Owners mention healthy, eager chicks that grow strong and later lay eggs without issues. The 35-pound bag offers a solid middle ground of quantity. One caution from the review history: a single bag arrived moldy and unreturnable, a rare but real risk with any large organic feed order.
Trusted and complete: a granule-form organic feed with marigold for color and methionine for growth — dependable, though an occasional delivery can arrive damaged.
Choose this for: a balanced organic grower from a name you already trust, with the bonus of brighter feathering.
Keep in mind: big-brand organic pricing runs premium, and delivery quality can vary, so inspect the bag on arrival.
7. Small Pet Select Chicken Grower Feed
A pellet-format grower that keeps small-bird pickiness in check with an 18% protein, US-sourced recipe.
Small Pet Select answers a specific need: a grower feed that’s corn-free, soy-free, and non-GMO, sourced here in the US. The 18% protein pellet form is small enough for growing birds to eat comfortably, which matters for younger flocks still developing their beaks.
The pellet format is the practical advantage here, cutting down on the sorting and waste that comes with mixed-texture feeds.
Two honest notes: it carries a premium price that several owners wish was lower, and there have been isolated delivery mix-ups where the wrong item arrived. The brand’s customer service gets consistent praise for resolving issues quickly, which has kept owners coming back.
A clean pellet option: the corn-free, soy-free US sourcing and small pellet size make it easy for young birds, with service that backs the bag up.
Best for: keepers who want a corn-free pellet grower and value responsive customer service when issues pop up.
The cost: it’s pricey for the 20-pound size, so larger flocks may burn through it too fast to justify.
Understanding the Specs
Protein percentage
The single most important number on a grower feed bag. Protein feeds muscle and feather development, so a 20% formula like Kalmbach pushes faster growth while a 17% option like Scratch and Peck keeps things steadier. Match the level to whether you’re raising meat birds or future layers.
Feed form and waste
Crumble is easiest for tiny beaks, pellets reduce sorting and waste, and whole grain or mash suits fermenting and natural foraging. The right form minimizes waste by keeping more feed in the crop and less on the ground.
FAQ
At what age should I switch chicks to grower feed?
What is the difference between starter and grower feed?
Can I ferment grower feed for my chickens?
Is organic grower feed worth the higher cost?
What does corn-free and soy-free feed mean for my chickens?
How much grower feed does a chicken eat per month?
Why does my grower feed arrive as powder?
Is pellet or crumble feed better for young chickens?
What should I feed after the grower stage?
Can I use grower feed for ducks and other poultry?
Final Thoughts: The Verdict
For most people, the chicken grower feed winner is the Scratch and Peck Grower Mash because its visible whole-grain ingredients, certified organic sourcing, and fermentable mash form deliver the clearest picture of what your flock is eating. If you want the highest protein for fast growth, grab the Kalmbach 20% Organic Grower with its gut-health blend. And for the best value on a large flock, the CountryMax 50LB Crumble stretches your dollar the furthest, with an 18% protein level that supports steady, healthy development from chick to laying age.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of August 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
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