Soil Recipes |

Soil Recipes

Soil is one of those things I used to overthink until my brain melted: ratios, drainage, nutrients, moisture, climate, container size, seed type, moon phase, emotional stability… you get it. Eventually I decided to stop spiraling and ask AI (I know, I know) for help building mixes that actually fit my life: my seed‑starting setup, my container garden, my Texas heat, and my tendency to be both lazy and chaotic.

Below are the soil recipes I use most often. They’re not universal, they’re not perfect, and they may not be right for you. But they’ve worked for me, and they keep my plants alive (mostly). If they work for you too, amazing. If not, sorry friend… gardening is a choose‑your‑own‑adventure and sometimes the adventure is “why did this die?”

A quick note about perlite: Perlite comes in different grades, from fine to chunky. Most garden centers don’t label the grade, which is why it’s confusing (and why I accidentally used the wrong one more than once). Here’s the simple version:

Grade 2-3 (Medium Perlite)

This is the “normal” perlite in most potting mixes and sold on the shelves of garden centers.

Use it for:

vegetables
soft herbs (basil, mint, parsley, cilantro, chives)
strawberries
seedlings
beans
okra
tomatoes
peppers
cucumbers
squash
root crops (radish, turnip, beet – unless using sand/pumice instead)

It keeps soil fluffy, drains well, and doesn’t dry out too fast.

Grade 4 (Coarse Perlite)

This is the chunky stuff – big pieces, fast drainage.

Use it for:

rosemary
lavender
thyme
oregano
sage
catnip
succulents
gritty Mediterranean mixes

If you accidentally use Grade 4 in a mix that calls for medium perlite (like basil or beans), don’t panic. It won’t hurt anything – it just dries out faster. Water a little more often and everything will be fine.

General Seed-Starting Mix (Most Seeds)

Best for: Anything that germinates quickly, doesn’t mind being transplanted, and doesn’t need special moisture or drainage conditions. This is good for most vegetables, herbs, flowers, and all fast annuals.

Recipe:

50% peat moss or coco coir
30% perlite (grade 2-3)
20% vermiculite
Optional: 1 tablespoon worm castings per quart (just a sprinkle)

Why: Seeds don’t need nutrients at first – they need oxygen + moisture. This mix prevents damping‑off and keeps roots happy.

Nightshade Seed-Starting Mix

Best for: hot and sweet peppers, eggplant, ground cherries, tomatillos, and tomatoes

Goal: warmth + drainage + no fungus gnats

Recipe:

40% peat/coco
40% perlite (grade 2-3)
20% vermiculite
Cinnamon dusting on top (anti‑fungal)
Bottom‑water only

Why: This provides high drainage, low nutrients, airy texture, and moisture stability.

Specialized Herb Seed Mix

Best for: slow germinators (such as rosemary, sage, thyme, lavender, catnip, oregano, etc)

Goal: moisture retention without sogginess

Recipe:

60% peat/coco
20% perlite (grade 2-3)
20% vermiculite
Light top layer of horticultural sand (optional)

Why: Herbs germinate slowly and need consistent moisture but not swampy soil.

GROW BAG SOIL MIXES (OUTDOORS)

All mixes below assume you have: potting soil, compost, manure, peat moss, perlite, worm castings.

Tomato Grow Bag Mix

Best for: Roma, San Marzano, Pineapple, Green Zebra, Berkeley Tie‑Dye

Goal: rich, fluffy, moisture‑retentive but not soggy

Recipe:

50% potting soil
20% compost
10% manure
10% peat moss
10% perlite (grade 2-3)
1–2 handfuls worm castings
Optional: crushed eggshells or oyster shell for calcium

Why: Tomatoes are heavy feeders and need calcium + airflow.

Squash & Zucchini Grow Bag Mix

Best for: leggy survivors + direct‑sown backups

Goal: drainage + nutrients + root expansion

Recipe:

50% potting soil
20% compost
10% manure
10% peat moss
10% perlite (grade 2-3)
1 handful worm castings

Why: Squash/zucchini need airflow around roots to avoid rot. This is the mix you already started using — perfect.

Pepper Grow Bag Mix

Best for: jalapeño, serrano, Big Jim, Joe E. Parker

Goal: warm, loose, slightly sandy, well‑drained

Recipe:

40% potting soil
20% compost
10% manure
10% peat moss
20% perlite (grade 2-3)
1 handful worm castings

Why: Peppers LOVE heat and hate wet soil. Extra perlite keeps them happy.

Okra Grow Bag Mix

Base Mix (the main structure)

50% potting soil
20% compost
10% manure
10% peat moss or coco coir
10% perlite (grade 2-3)

Optional Add‑ins:

1-2 handfuls worm castings
1 handful coarse sand (okra LOVES sandy soil)
1 tablespoon crushed eggshells

Why: Okra wants deep and loose soil, fast drainage, moderate nutrients, heat tolerance, and draught resistance. This mix will do that!

Black-Eyed Peas (Cowpeas)

Goal: lean, airy, drought‑tolerant soil that encourages deep roots and heavy pod set

Recipe:

50% potting soil
20% compost
10% manure
10% peat moss or coco coir
10% perlite (grade 2-3)

Optional Add-ins:

1 handful worm castings
1 handful coarse sand (they LOVE sandy soil)

Why: Cowpeas thrive in lean, well‑drained soil. Too much fertility = too much leaf growth and fewer pods. This mix keeps them productive, drought‑resilient, and perfectly suited for drying on the vine.

Cucumbers

Soil Mix

50% potting soil
20% compost
10% manure
10% peat moss or coco coir
10% perlite (grade 2-3)
1-2 handfuls worm castings

Optional Add-in:

a handful of coarse sand for extra drainage

Why: This mix keeps the soil airy enough to prevent root rot while providing the fertility needed for heavy fruit production.

Beets

Soil Mix:

50% high‑quality potting soil
30% compost
20% drainage amendment (pumice, coarse perlite – grade 4, or coarse sand)

Optional Add‑ins:

1 tbsp bone meal per gallon
½ cup worm castings per pot

Notes: Needs loose soil for bulb formation; avoid heavy mixes.

Turnips

Soil Mix:

50% potting soil
30% compost
20% drainage amendment (pumice, coarse perlite – grade 4, or coarse sand)

Optional Add‑ins:

1 tbsp bone meal per gallon

Notes: Needs loose soil for proper root swelling.

Radish

Soil Mix:

60% potting soil
30% compost
10% drainage amendment (pumice, coarse perlite – grade 2-3, or coarse sand)

Optional Add‑ins:

¼ cup worm castings

Notes: Fast crop; soil should stay consistently moist but not soggy.

Beans

Good for: all bush beans, such as green beans, pinto beans, black beans, kidney beans, etc

Soil Mix:

60% potting soil
30% compost
10% drainage amendment (perlite – grade 2-3/pumice)

Optional Add‑ins:

A pinch of slow‑release fertilizer (beans don’t need much)

Notes: Beans fix nitrogen – don’t overfeed.

Curly Parsley

Soil Mix:

50% potting soil
40% compost
10% drainage amendment (pumice, perlite – grade 2-3, or coarse sand)

Optional Add‑ins:

½ cup worm castings

Notes: Parsley likes richer soil than root crops.

Herb Grow Bag Mix

Best for: rosemary, sage, catnip

Goal: Mediterranean = dry roots + airflow

Recipe:

40% potting soil
20% compost
20% perlite (grade 4)
20% peat/coco
Optional: a handful of coarse sand

Why: Herbs rot easily in Texas humidity. This keeps them alive.

STRAWBERRY SOIL MIXES

Strawberry Daughter Pinning Mix (Temporary rooting stage)

Best for: rooting runners before clipping

Goal: light, airy, fast‑draining, encourages root formation

Recipe:

40% potting soil
30% peat/coco
20% perlite (grade 2-3)
10% compost
Optional: sprinkle of worm castings

Why: You want roots, not lush leaves. Too much compost = rot.

Strawberry “Forever Pot” Mix (5-gallon pot)

Best for: rooted daughters

Goal: moisture retention + drainage + nutrients

Recipe:

40% potting soil
30% compost
10% manure
10% peat/coco
10% perlite (grade 2-3)
1 handful worm castings

Why: Strawberries like rich soil but HATE soggy roots. This is the perfect balance.

NOTES FOR CENTRAL TEXAS

Always add extra perlite in Texas.
If you only have grade 4 perlite, you can still use it – just expect faster drying and water accordingly.
Grow bags dry out FAST – water deeply, not constantly.
Shade cloth in July/August = survival.
Morning sun + afternoon shade is ideal.
Mulch EVERYTHING (pine bark, straw, leaves).
Fertilize lightly but consistently (Texas heat burns roots).