When to plant Chard in Jupiter, FL
In Zone 10b (Jupiter), direct-sow Chard between January 27 and February 17 for spring, after the January 1 last-frost mark. A second sowing from February 18 to March 4 extends the harvest into fall.
When to Plant Chard in Jupiter, FL
Palm Beach County, Florida gardeners: here's your July plan
Your Palm Beach County, Florida garden is entering a new phase. Here's what's on the schedule for July and why each task matters now.
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Plan the fall garden
Make a planting map for August. Tomatoes, peppers, brassicas, lettuce, root crops all go in over the next 8 weeks. Soil amendments and irrigation prep happen now.
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Keep heat-survivor crops productive
Daily harvest of okra and southern peas keeps plants producing. Let pods over-mature and the plant stops setting new fruit.
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Watch for hurricane prep season
August-October is hurricane season. Stake young trees, secure rain barrels, and plan how to protect tender transplants from high winds.
Swiss chard is a colorful, heat-tolerant green with large crinkled leaves and vibrant stalks in red, yellow, and white. Both the leaves and stems are edible and nutritious.
Jupiter, Florida is in USDA Zone 10b. The average last spring frost is February 17 and the first fall frost is April 15, giving you a growing season of approximately 57 days.
At an elevation of 355 feet, Palm Beach County receives approximately 50 inches of rainfall annually with predominantly sand soil. Summer highs average 93°F, providing good warmth for Chard during the growing season. Sandy soil warms quickly in spring — great for early planting — but Chard will need more frequent watering and organic matter to retain nutrients.
Jupiter Soil Profile
Soil Type
Sand
Soil pH
5.1-5.9
Drainage
Well Drained
Soil Compatibility in Jupiter
How your county's soil matches Chard's growing requirements.
Soil pH
Your soil pH (5.1–5.9) is more acidic than Chard prefers (6.0–7.0). Add garden lime to raise pH.
Soil Texture
Sandy soil in Palm Beach County warms quickly in spring but drains fast. Chard will need more frequent watering and regular compost additions to retain nutrients.
Drainage
Drainage is adequate for Chard.
Organic Matter
Organic matter is low (1.3%). Add 2-3 inches of compost before planting Chard.
How to Plant Chard
Fall planting: Sow 8 weeks before your first frost date for a fall harvest.
Chard Water Budget
Monthly Watering Guide for Chard
Chard needs approximately 0.8 inches of water per week (3.5" per month). Here's how your county's rainfall compares month by month.
| Month | Chard Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 2.4" | 0" | ❄️ Dormant |
| Feb | 3.5" | 2.3" | 1.2" | 💧 Light watering |
| Mar | 3.5" | 3.2" | 0.3" | 💧 Light watering |
| Apr | 3.5" | 2.4" | 1.1" | 💧 Light watering |
| May | 3.5" | 3.3" | 0.2" | 💧 Light watering |
| Jun | 3.5" | 6.2" | 0" | ✅ Rainfall sufficient |
| Jul | 3.5" | 7.3" | 0" | ✅ Rainfall sufficient |
| Aug | 3.5" | 7.4" | 0" | ✅ Rainfall sufficient |
| Sep | 3.5" | 7" | 0" | ✅ Rainfall sufficient |
| Oct | 3.5" | 4.2" | 0" | ✅ Rainfall sufficient |
| Nov | — | 2" | 0" | ❄️ Dormant |
| Dec | — | 2.2" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Feb–Oct in Palm Beach County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Chard Heat Requirements (GDD)
What are Growing Degree Days (GDD)?
Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.
Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.
Chard Planting Timeline — Jupiter, FL
Chard Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 20 | Jan 20 – Feb 3 |
| Transplant Outdoors | February 17 | Feb 17 – Mar 3 |
| Direct Sow | January 27 | Jan 27 – Feb 17 |
| Harvest | April 14 | Apr 14 – Jun 2 |
| Fall Sowing | February 18 | Feb 18 – Mar 4 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors Direct Sow |
| February | Start Indoors Transplant Outdoors Direct Sow Fall Sowing |
| March | Transplant Outdoors Fall Sowing |
| April | Harvest |
| May | Harvest |
| June | Harvest |
| July | — |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
0.8"/week · 1-2 times/week
📅 Days to Maturity
50–60 days
🧪 Soil pH
Needs 6–7 · Your soil: too_acidic
🗺️ USDA Zone
Zone 10b
📆 Growing Season
57 days in Palm Beach County
Growing Tips for Chard in Jupiter
Direct sow Chard outdoors after February 17 in Palm Beach County when soil has warmed and frost danger has passed.
Sandy soil in Palm Beach County dries quickly — mulch Chard with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
Summer highs in Palm Beach County reach 93°F — grow Chard as a spring or fall crop. Use shade cloth if planting in summer.
General growing tips
Direct sow or transplant after last frost. Harvest outer leaves regularly to encourage continuous production. Chard tolerates both heat and light frost.
Companion Planting
Good Companions
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Check more plant combinations with our Companion Planting Checker →
Chard in Other Locations
When should I plant Chard in Jupiter, FL?
In Jupiter, FL, plant Chard after the last frost (around January 1) and before the first frost (around December 31). Best results when soil holds above 50°F.
What growing zone is Jupiter, FL for Chard?
Jupiter sits in USDA Zone 10b. Chard grows reliably in zones 2a through 11b, so it's a good fit here.
Can Chard grow in Jupiter's climate?
Yes — Chard grows well in Jupiter's temperate climate. Jupiter averages a 365-day frost-free season, with last frost around January 1 and first frost around December 31.
Your Palm Beach County Garden Planner — Free
A 22-page printable planner built for Palm Beach County (Zone 10b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.