Miami-Dade County, FL — Planting Guide
Miami-Dade County is in USDA Zone 11a. The average last spring frost is January 1 and the first fall frost is December 31, giving you a growing season of approximately 200 days.
At an elevation of 123 ft, Miami-Dade County receives approximately 58.7 in of rainfall annually. Summer highs average 90°F with winter lows around 59°F. The predominant soil type is Sand.
🌡️ Zone
11a (40°F to 45°F min)
❄️ Last Frost
January 1
🍂 First Frost
December 31
📅 Growing Season
200 days
⛰️ Elevation
123 ft
🌧️ Annual Rainfall
58.7 in
Monthly Watering Calendar for Miami-Dade County
When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.
Why it matters: Mulch reduces watering needs 30-50% by cutting evaporation. Miami-Dade County's 59" annual rainfall might be enough for vegetables in some months and not in others — a 2-3" mulch layer evens the swing.
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 2.9 in | 8 days | 1.4 in | Moderate |
| Feb | 2.9 in | 6 days | 1.4 in | Moderate |
| Mar | 3.4 in | 8 days | 0.9 in | Moderate |
| Apr | 2.5 in | 5 days | 1.8 in | High |
| May | 3.8 in | 7 days | 0.5 in | Low |
| Jun | 8.1 in | 15 days | — | Low |
| Jul | 9.5 in | 19 days | — | Low |
| Aug | 8.6 in | 15 days | — | Low |
| Sep | 7.1 in | 15 days | — | Low |
| Oct | 5 in | 10 days | — | Low |
| Nov | 2.3 in | 6 days | 2 in | High |
| Dec | 2.7 in | 6 days | 1.6 in | High |
Annual total: 58.8 in. Water needs vary by crop — tomatoes need ~1.2"/week while herbs like rosemary need only 0.3"/week. Check individual plant pages for crop-specific water budgets that factor in your county's rainfall and soil drainage.
Miami-Dade County Soil Profile
Soil Type
Sand
Soil pH
5.1-6.3
Drainage
Well Drained
Gardening Difficulty Score
Miami-Dade County is a very forgiving place to garden. Most plants thrive here with minimal effort.
No frost countdown needed. Frost is exceptional in this area — most years record zero frost days. Plan around heat and rainfall instead.
Local Gardening Help in Miami-Dade County
Free expert help is closer than you think. Your county's cooperative extension office connects you with trained gardeners, soil testing labs, and local programs — all specific to Miami-Dade County's climate and soil.
County Extension Office
Miami-Dade County University of Florida IFAS Extension Extension Office
Phone: 352-392-1761
Visit Extension Office Website →
Extension offices are run by land-grant universities and funded by the USDA. Their advice is free, research-based, and tailored to your county's specific conditions.
Master Gardener Program
Free gardening help from trained volunteers
Master Gardeners are community volunteers who complete 40–60 hours of university horticultural training. They answer gardening questions, diagnose plant problems, and offer workshops — all free.
Many extension offices run a Master Gardener hotline where you can call or email with photos of plant problems for free diagnosis.
Soil Testing
Available through your extension office
Before amending your soil, get it tested. Your extension office offers soil testing (typically $10–$25) that tells you exact pH, nutrient levels, and amendment recommendations specific to what you want to grow.
Services Available in Miami-Dade County
Finding local nurseries & garden centers in Miami-Dade County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Miami-Dade County's soil and climate that big-box stores can't. Plants from local growers are typically hardier because they're already acclimated to your zone.
How to Find Them
Search for "nurseries near Miami-Dade County FL" or "garden center Miami-Dade County" on Google Maps. Also check with your extension office — they often maintain lists of reputable local nurseries and plant sales.
Community gardens & gardening groups
Community gardens are a great way to learn from experienced gardeners in your area, especially if you're limited on space. Search "community garden Miami-Dade County FL" or check your extension office and local parks department. Facebook groups like "Miami-Dade County Gardeners" or "Florida Gardening" are also excellent for local advice and plant swaps.
What to Plant Next in Miami-Dade County
In a year-round growing climate, succession planning isn't about beating frost — it's about matching the next crop to the next season's heat.
Cool-season crops typically finish March–April as temperatures climb. Don't replant lettuce or brassicas now — they'll bolt within weeks. Switch to heat-lovers.
Spring tomato vines fade as summer humidity rises. Pull them by June and plant heat-survivors that thrive in the conditions tomatoes hate.
As humidity drops in September–October, the second growing season opens. Plant transplants of tomatoes, peppers, eggplant — they'll set fruit through fall and into winter.
Winter is your "spring" — direct-sow every 2 weeks for continuous lettuce, spinach, and radish harvests. Plant strawberries, garlic, and onions. Brassicas planted now finish in January–March.
Sunlight & Day Length in Miami-Dade County
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
The practical takeaway: A 14-hour day in June produces dramatically more photosynthesis than a 10-hour day in November. Miami-Dade County's seasonal swing determines which crops can pack growth into spring vs. limp through fall.
Longest Day
13.6 hours
Summer solstice daylight
Shortest Day
10.4 hours
Winter solstice daylight
Peak Sun Hours
9.1 hr/day peak (summer)
Peak sun hours (green dashed line below) account for cloud cover — this is the usable direct sunlight your garden actually receives. Most vegetables need 6+ peak sun hours.
Onion tip: Your shorter days favor short-day onion varieties like Vidalia, Texas 1015, and Red Creole. Plant in fall for best results.
View detailed monthly data
| Month | Daylight Hours | Peak Sun Hours | Day Length |
|---|---|---|---|
| January | 10.6 hr | 6.3 hr | Short day |
| February | 11.1 hr | 7.2 hr | Short day |
| March | 11.8 hr | 7.6 hr | Short day |
| April | 12.6 hr | 8.5 hr | Neutral |
| May | 13.3 hr | 9.1 hr | Neutral |
| June | 13.6 hr | 7.8 hr | Neutral |
| July | 13.5 hr | 6.9 hr | Neutral |
| August | 12.9 hr | 6.5 hr | Neutral |
| September | 12.1 hr | 6.3 hr | Neutral |
| October | 11.4 hr | 6.5 hr | Short day |
| November | 10.7 hr | 6.4 hr | Short day |
| December | 10.4 hr | 5.7 hr | Short day |
Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.
Soil Temperature & Composting in Miami-Dade County
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
Quick context: Soil temperature predicts plant emergence better than calendar dates. Miami-Dade County's spring soil warm-up curve tells you which weeks are safe for direct-sow beans, cucumbers, squash, and corn.
Plant Warm Crops When
Soil reaches 60°F+
Soil warm enough from Jan through Dec.
Best Month to Compost
Mar
Microbial activity peaks when soil is warm.
Active Composting
12 months
Nearly year-round composting.
View detailed monthly data
| Month | Soil 4" Deep | Soil 8" Deep | Compost Activity | Time to Finish |
|---|---|---|---|---|
| Jan | 60°F | 66°F | ♻️ Active | ~14 weeks |
| Feb | 60°F | 64°F | ♻️ Active | ~14 weeks |
| Mar | 65°F | 69°F | 🔥 Peak | ~8 weeks |
| Apr | 72°F | 72°F | 🔥 Peak | ~8 weeks |
| May | 81°F | 78°F | 🔥 Peak | ~8 weeks |
| Jun | 89°F | 85°F | 🔥 Peak | ~8 weeks |
| Jul | 96°F | 92°F | 🔥 Peak | ~8 weeks |
| Aug | 96°F | 92°F | 🔥 Peak | ~8 weeks |
| Sep | 91°F | 91°F | 🔥 Peak | ~8 weeks |
| Oct | 84°F | 86°F | 🔥 Peak | ~8 weeks |
| Nov | 72°F | 78°F | 🔥 Peak | ~8 weeks |
| Dec | 65°F | 71°F | ♻️ Active | ~14 weeks |
Highlighted rows = soil 60°F+ (safe for warm-season transplants). Compost finishes fastest during peak activity months.
Pest & Disease Pressure in Miami-Dade County
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
For new gardeners: Two gardeners can grow identical seeds and get wildly different results based on pest pressure alone. Miami-Dade County's climate sets a floor on what's possible without intervention.
Insect Pest Pressure
High — expect multiple pest generations. Preventative measures essential.
Disease Risk
High fungal/bacterial risk. Space plants for airflow, water at soil level.
Seasonal Risk
View 6 common pests in your area
| Pest | Risk Level | Peak Months |
|---|---|---|
| Aphids | High | Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec |
| Whiteflies | High | Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec |
| Spider mites | High | Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov |
| Thrips | High | Mar, Apr, May, Jun, Jul, Aug, Sep |
| Scale insects | Moderate | Apr, May, Jun, Jul, Aug, Sep, Oct |
| Nematodes | Low | May, Jun, Jul, Aug, Sep |
Organic pest management tips
- Install physical barriers: floating row covers, copper tape for slugs, mesh netting
- Apply Bt (Bacillus thuringiensis) for caterpillar control — safe for beneficial insects
- Use kaolin clay spray to deter a wide range of insects on fruiting crops
- Release beneficial insects: ladybugs for aphids, parasitic wasps for caterpillars
- Apply neem oil weekly during high-pressure months
- Mulch heavily (3-4 inches) to reduce soil-borne disease splash
Cover Crops for Miami-Dade County
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with planting dates calibrated for your area.
Quick context: Cover crops are the experienced gardener's secret weapon. Miami-Dade County's climate determines which species thrive: clover and vetch in mild winters, cereal rye and Austrian peas in cold ones.
Spring Cover Crops (4 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | Jan 6 | Oct 29 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Cowpeas (southern peas) | Jan 6 | Oct 22 | ✓ Yes | Excellent nitrogen fixer for warm climates, edible |
| Sorghum-sudan grass | Jan 4 | Nov 5 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Dec 5 | Nov 5 | ✓ Yes | Living mulch, fixes nitrogen, permanent ground cover |
Summer Cover Crops (1 options) — Fill gaps and suppress weeds between plantings
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Sunflowers | Jan 23 | Dec 10 | — | Deep roots break compaction, attract pollinators and beneficial insects |
Fall Cover Crops (1 options) — Plant after harvest to protect soil over winter
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Crimson clover | Oct 31 | Dec 11 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
Wind & Microclimate in Miami-Dade County
Why it matters: A 10 mph wind doesn't feel like much, but it triples leaf transpiration vs. still air. Miami-Dade County's 10.0 mph average means most days are gentle on plants, but consider how a 20+ mph spring gust would affect a flat of seedlings hardened off too quickly.
Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.
Seasonal Wind Speed
Spring: 13 mph Summer: 10 mph
Fall: 10 mph Winter: 11 mph
Prevailing wind: E. Moderate wind — consider a temporary windbreak for young seedlings.
Windbreak Benefit
5/10
Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.
Frost Pocket Risk
Low
Relatively flat terrain (59 ft range). Frost pocket risk is minimal — garden placement is flexible.
Rainwater Harvesting in Miami-Dade County
How much water you can collect, when to collect it, and what size system you need for your garden.
For new gardeners: Building a rainwater system is mostly about doing the math: roof area × annual rainfall × 0.6 = gallons you could realistically capture. For Miami-Dade County, that's your 59" times your roof.
Annual Collection
29,305 gal
Per 1,000 sq ft of roof area (at 80% collection efficiency)
Recommended Setup
6 rain barrels (55 gal each)
For a typical 500 sq ft garden. Serious collectors: consider a 1,000 gal tank.
Legal Status
Unrestricted
Rainwater harvesting is fully legal in your state with no restrictions.
Best Collection Months
Jun, Jul, Aug, Sep
Highest rainfall months — your barrels will fill up quickly during these months.
Months to Draw From Storage
Apr, Nov, Dec
Dry months when you'll rely on stored water — size your storage for this gap.
Rainwater collection tips for your area
- Your county receives approximately 58.8 inches of rain per year
- A 1,000 sq ft roof can collect roughly 29,305 gallons annually
- Rainwater harvesting is fully legal in your state
- Your area gets ample rainfall — even small barrels make a big difference
- Consider a rain garden to handle overflow during heavy rainfall months
Soil & Growing Conditions in Miami-Dade County
Soil Type
Sand
Soil pH 5.1–6.3 · Excessively Drained drainage
Raised beds strongly recommended here — native soil drainage or texture limits in-ground options.
Watering Needs
Drought stress: 3.5/10
Low-to-moderate drought stress. Plan to water 1–2 times per week during peak summer. (58.7 in. annual rainfall)
Season Tips
200-day frost-free season
Plenty of time for warm-season crops. Start heat-lovers indoors 6–8 weeks before last frost to maximise your harvest window.
Your Free Printable Garden Planner
Plan every bed, every planting, every harvest — in one place. This 22-page printable includes your zone's planting calendar, a month-by-month task list, a seed inventory tracker, a harvest log, and succession-planting charts. Built to print, write in, and actually use all season.
Recommended for Your Garden
Reduce heat stress and sun scorch in hot climates with UV-stabilized shade cloth.
Retain moisture and nutrients in sandy soils with expanded vermiculite.
Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.
Monthly Planting Guide for Miami-Dade County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Miami-Dade County.
Frequently Asked Questions
What planting zone is Miami-Dade County, FL?
Miami-Dade County is in USDA Hardiness Zone 11a. This zone classification determines which perennial plants survive winter and sets the baseline for frost timing across the county.
When is the last frost in Miami-Dade County, FL?
Based on 3 years of NOAA weather station data, the median last spring frost in Miami-Dade County falls around January 1. Use April 15 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Miami-Dade County, FL?
The median first fall frost in Miami-Dade County arrives around December 31. In cold years it can arrive as early as April 15; in mild years as late as April 15. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Miami-Dade County?
Miami-Dade County has a frost-free growing season of approximately 200 days. This long season supports multiple succession plantings and warm-season crops that need extended heat, like sweet potatoes and melons.
What is the soil like in Miami-Dade County for gardening?
Miami-Dade County has predominantly Sand soil with a pH range of 5.1–6.3 and Excessively Drained drainage. The native soil conditions make raised beds a particularly good investment here — they let you control drainage and fertility independent of the ground soil.
What is grown commercially in Miami-Dade County?
Miami-Dade County has commercial agriculture that includes Sugarcane, Citrus, Tomatoes, Green Beans, Strawberries. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Miami-Dade County a good location for home gardening?
Miami-Dade County scores 80/100 (Excellent) on our Microclimate Index, which combines frost reliability, drought pressure, soil challenge, elevation risk, and long-term climate trend. This is an above-average location for home gardening with relatively predictable growing conditions.
Your Miami-Dade County Garden Planner — Free
A 22-page printable planner built for Miami-Dade County (Zone 11a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.
The Gardener's Encyclopedia to Companion Planting
The pairings that make vegetables, herbs, and flowers grow better — and the ones that quietly wreck a bed.
- Proven pairings for 200+ vegetables, herbs, flowers, and fruits
- Full seed-starting + planting schedule with timing and spacing
- Bonus: square-foot gardening guide + printable seasonal planners
Seed Saving & Storage Guide
Most saved seeds go bad before next season. This shows exactly when to pick, how to dry, and where to store seeds from 200 plants so yours don't.
- 200 plants, step-by-step: life cycle, pollination type, isolation
- Exact temperature + humidity ranges that keep seeds viable
- Bonus: searchable Google Sheets tracker + custom GPT assistant
Composting Guide for Homesteaders
Turn kitchen scraps and yard waste into compost that actually feeds the garden — instead of a pile that smells, attracts pests, and never breaks down.
- 14 sections on composting methods, soil science, and troubleshooting
- The 7-step hot-compost system from start to finish
- Bonus tools: troubleshooting chart, safety guide, monitoring log