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Sunflower Seeds My Daughter Planted That Grew Taller Than Her by August
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items We tried growing sunflowers three summers in a row and kept ending up with sad, floppy stems that barely reached her knees. This past spring we finally figured out the soil, the seeds, and the setup — and by August she was standing next to stalks tha...
Sections
11
Sunflower Seeds That Actually Produce Giants
Soil and Compost for Hungry Sunflowers
Fertilizer That Keeps Them Shooting Up
Watering Tools for Consistent Moisture
Garden Stakes and Supports for Tall Stalks
Pest Control So Bugs Don't Wreck Everything
Sunflower Seeds That Actually Produce Giants
Our first two years we grabbed random seed packets and ended up with stubby little flowers. Once we switched to varieties bred for height, everything changed — my daughter measured them with a yardstick every single morning.
Grab these if your kid wants the classic towering sunflower — ours hit 10 feet and my daughter told every neighbor who walked by.
Burpee Mammoth Sunflower, Annual Flower Seed, Full Sun
Try these for a mix of tall varieties — we planted a whole row along the fence and it looked like a wall of gold by late July.
Ferry-Morse "Grow the Sunshine" Sunflower Seed Variety
Use these if you also want seeds to harvest later — my daughter spent an entire afternoon pulling seeds out and sorting them into little cups.
Sunflower Giant Grey Stripe Seed - 1 Packet
Snag a couple packets because the germination rate is wild — we planted twelve and eleven came up, which never happened with the cheap ones.
Burpee Mammoth Sunflower, Annual Flower Seed, Full Sun
Soil and Compost for Hungry Sunflowers
Nobody told me sunflowers are basically soil vampires. Our first year we planted in plain clay dirt and wondered why nothing grew past two feet. Lesson learned the hard way.
Swap out whatever tired dirt is in your beds for this — we mixed it into our clay soil and the difference was honestly embarrassing compared to previous years.
Customer reviews for Miracle-Gro Garden Soil All Purpose
Toss a bag of this into the planting area about a week before you put seeds down — smells rough for a day but the plants absolutely take off.
Customer reviews for Black Kow Compost Cow Manure
Use this if you want to keep things organic — my daughter insisted on no chemicals because she wanted to eat the seeds, so this was our compromise.
Customer reviews for Espoma Organic Potting Soil Mix
Mix a scoop into each hole if your soil clumps up when wet — our drainage was terrible until we started adding this and the roots stopped rotting.
Back to the Roots Organic Perlite for Garden Soil, 8 qt
Fertilizer That Keeps Them Shooting Up
Around week four our sunflowers stalled out and I panicked. Turns out they're heavy feeders and the soil alone wasn't cutting it. A little fertilizer at the right time made all the difference.
Keep this on hand for weekly feedings once the stalks hit about a foot — we skipped it the first year and our sunflowers looked anemic by June.
Miracle-Gro Water Soluble All Purpose Plant Food
Sprinkle this around the base if you forget to do liquid feeds — it's slow release so even when life got busy, the plants still got nutrients.
Jobe's Organics All Purpose Slow Release Plant Fertilizer
Switch to this once you see buds forming — the flower heads on ours were literally the size of dinner plates and I'm not exaggerating.
Dr. Earth Flower Girl Bud & Bloom Booster 3-9-4 Fertilizer
Work this into the soil at planting time for strong roots — we had a nasty windstorm in July and every single stalk stayed standing because the roots were anchored deep.
Espoma Organic Bone Meal 4-12-0 All-Natural Plant Food
Watering Tools for Consistent Moisture
Sunflowers drink a shocking amount of water, especially in July heat. We killed a batch by under-watering and killed another by flooding them. These helped us find the sweet spot.
Grab a hose that actually reaches your garden beds — I was hauling buckets the first summer like some kind of pioneer and it was ridiculous.
Customer reviews for Gilmour Round 50' Soaker Hose
Set this up on a timer and walk away — before we had one, I'd forget to water for three days straight and the leaves would droop like sad little flags.
Melnor Multi-Adjustable Stationary Spike Sprinkler
Use the shower setting to water the base without blasting the stems — my daughter knocked over two seedlings with a regular hose nozzle before we switched.
Dramm 16" One Touch Rain Wand
Stick this in the ground before you water so you stop guessing — saved us from overwatering, which is what rotted our plants the second year.
Watering Guide and Table Moisture Meter
Garden Stakes and Supports for Tall Stalks
Around six feet our sunflowers started leaning like they were trying to escape the yard. Without support, one snapped during a thunderstorm and my daughter cried for twenty minutes.
Get these in the ground early before the stalks get thick — we waited too long once and trying to stake a seven-foot sunflower felt like wrestling a tree.
Vigoro 6 ft. Plastic Garden Plant Stake, Heavy Duty Green
Pair these with your stakes because they stretch as the stalk grows — twist ties cut into ours and left marks that made the stems weak.
VELCRO ONE-WRAP Garden Ties, 50 ft x 1/2
Snag the eight-footers if you're growing mammoth varieties — our six-foot stakes were comically short by late July.
Gardener's Blue Ribbon ST6BULK Bulk Sturdy Stakes
Wrap this loosely in a figure eight between the stake and stalk — it's gentle enough that it won't damage the stem but strong enough to hold through wind.
Hyper Tough 800 Feet Jute Twine Natural
Pest Control So Bugs Don't Wreck Everything
Aphids showed up in June like uninvited guests and nearly destroyed our biggest plant. Then the slugs came for the seedlings. Defending sunflowers is basically a part-time job.
Spray this at the first sign of aphids — we waited a week thinking they'd go away on their own and lost two plants before getting serious.
Natria, Neem Oil, Ready-to-Use, 24 fl oz, Gardening
Keep a bottle ready for when things escalate — some pest problems need more than neem oil and pretending otherwise cost us a whole row of seedlings.
Ortho BugClear Insect Killer for Lawns and Landscapes
Scatter this around seedlings the day you plant because slugs work fast — we woke up one morning to find three baby sunflowers chewed down to nubs overnight.
Corry's Slug and Snail Killer 1.75 Pound Box
Try this for a gentler option when your kid is helping spray — my daughter wanted to do pest control herself and this one felt safe enough to hand over.
Spectrum Garden Safe Insecticidal Soap Insect Killer
Raised Bed and Planter Options
We didn't have great ground soil so we built a raised bed the third year. That single change probably mattered more than anything else we did — drainage, root depth, everything improved.
Build this if your yard soil is garbage like ours — filling it with good soil gave us total control and the sunflowers responded immediately.
Greenes Fence Original Cedar Raised Garden Bed, 4' x 8'
Grab this narrow one if you're working with a tight side yard — we lined three along our fence and it looked like a sunflower alley by August.
Best Choice Products, Raised Metal Outdoor Garden Bed
Use this on a patio or deck if you don't have yard space — our neighbor grew four-foot sunflowers in one on her apartment balcony.
Keter Urban Bloomer Resin Raised Garden Bed, Graphite
Fill your raised bed with this instead of hauling dirt from the yard — it's already got the right texture and nutrients so you skip the amendment step.
Vigoro - 1 cu. ft. All Purpose Garden Soil for In-Ground Use
Kid-Friendly Garden Tools
Handing my five-year-old adult-sized tools was a disaster — she couldn't grip anything and flung dirt everywhere. Kid-sized tools turned planting day from stressful to actually fun.
Get this for younger kids who want their own gear — my daughter refused to use mine after she got her own pink trowel and she actually planted more carefully.
Melissa & Doug Sunny Patch Pretty Petals Gardening Tote
Keep a pair by the back door so they're always ready — our kid used to complain about touching worms until she had gloves and suddenly worms were fascinating.
Midwest Quality Glove Nickelodeon Kids Cotton Gardening
Toss this in the cart if you need something sturdy — cheaper sets broke on us within a week but these lasted the whole season and still look fine.
Hey! Play! Kid's Garden Tool Set with Long Wood Handles
Try this one for the kid who asks why about everything — it comes with learning cards and my daughter memorized facts about pollination before she could read them herself.
NATIONAL GEOGRAPHIC Flower Growing Gardening Kit
Measuring and Tracking Growth
Half the fun was watching my daughter measure the sunflowers against herself. She kept a little chart on the fridge and updated it every Sunday — it became our whole family's favorite ritual.
Grab a real tape measure instead of a ruler — once the stalks passed three feet, my daughter's school ruler was hilariously useless.
Stanley Powerlock Tape Measure, 25-Ft. x 1-In. 1 Pack
Hang one next to the sunflower bed so your kid can compare their height to the plant — my daughter was thrilled and horrified when the flower passed her up.
Wall Tape with Height Chart for Kids Plain Beige
Use this as a garden journal — my daughter drew pictures of each sunflower every week and looking back through it now genuinely makes me tear up.
Mead Composition Book Wide Ruled 100 Sheets 7 12 x 9
Pair these with the journal for detailed drawings — she insisted on matching the exact shade of yellow and went through three yellow pencils by August.
Crayola Colored Pencil Set, 50 Ct, School Supplies
Sun Protection for Long Garden Days
Planting and tending sunflowers means standing in full sun for hours. Our first big planting day ended with sunburned shoulders and a cranky kid. Now we prep before heading out.
Slather this on before you even step outside — learned that lesson after my daughter's ears turned lobster red during a two-hour planting session.
Banana Boat Kids Sport Sunscreen Spray, SPF 50, 6 oz
Keep one of these hanging by the back door — it stays on better than baseball caps and actually covers the back of the neck where kids always burn.
Coolibar Unisex Chlorine Resistant Hat
Bring this for yourself because you'll forget your own sunscreen worrying about the kid — I got the worst farmer's tan of my life that first summer.
Banana Boat Aqua Sensitive Sunscreen Lotion (SPF 50+)
Wet this and drape it around your neck during July garden sessions — the heat index hit 100 one afternoon and this was the only reason we stayed outside long enough to finish staking.
Frogg Toggs Chilly Pad Sport Cooling Towel
Harvest and Display When They Finally Bloom
When those massive heads finally opened up in August, we wanted to cut a few for the kitchen table and save seeds from the rest. Watching my daughter harvest what she grew from a tiny seed was worth every frustrating moment.
Use sharp shears to cut the stems cleanly — I tried scissors the first time and mangled the stalk so badly the flower wilted within hours.
(2 pack) Fiskars Power Curve Bypass Pruner
Stick cut sunflowers in these on the kitchen table — they looked so good my daughter started giving them to neighbors like some kind of tiny florist.
Ball, Glass Mason Jar, 32 Oz. Quart, Regular Mouth 12-Count
Wrap harvested seed heads in these while they dry — way better than plastic bags because airflow prevents mold, which ruined half our seeds the first year.
Bee's Wrap Beeswax Wraps for Food
Toss dried seeds into these labeled by variety for next spring — my daughter wrote the names on each bag herself and already has a planting plan for next year.
Ziploc® Storage Bag Gallon Mega Pack, 75 CT