For most Florida gardeners, the best sweet potato is a quick-maturing, orange-fleshed type such as Beauregard or Georgia Jet in the north, and a heat-loving, white-fleshed type such as boniato in the south. Summer rain and heat bring rot, disease and pest pressure. The real choices come down to rain, rot and how many frost-free months you have. Pick the type first, then the variety.
The short answer for Florida
Choose by type and by region. North Florida suits moist, orange-fleshed varieties planted in spring and dug before the first freeze. Central and south Florida, where frost rarely stops anything, suit dry, white-fleshed types that tolerate a long season and wet summers.
The Jacksonville weather station shows why. It averages 73.2 days a year at 90°F or higher, which is plenty of heat for vines that stall in cool soil. Its last spring freeze (32°F) falls between February 16 and March 7, meaning that across those dates the chance a freeze is still ahead drops from 70 percent to 30. The first fall freeze falls between November 26 and December 13, the same 30 to 70 percent band. That leaves a long stretch for crops that finish early, and it is the reason slow varieties are never the first pick here.
Which sweet potato types suit Florida best?
| Type | Examples | Flesh and texture | Where it fits |
|---|---|---|---|
| Orange, moist | Beauregard, Georgia Jet, Covington | Sweet, soft when baked | North Florida spring planting; quick finishers |
| White or cream, dry | Bonita, O’Henry | Drier, firmer, milder | Hot, humid summers and sandy soil |
| Boniato | Caribbean-style white-fleshed types | Dry, chestnut-like | Central and south Florida, winter-centered season |
| Purple | Murasaki (purple skin, pale flesh), Stokes Purple (purple flesh) | Dense, dry to medium | Anywhere the others grow; a good second bed |
Does the variety matter as much as the type?
It does, mostly for pests. Check with your local county or provincial extension office about pests in your area. Some selections tolerate nematodes better than others, so ask your county extension office which ones hold up locally. For a broader look at the crop from slips to curing, see Growing Sweet Potatoes in Florida.
What will not work here
The planting window above fails first in Orlando, Miami and the rest of the peninsula. Central and south Florida are effectively frost-free, so the calendar inverts: the main season runs through winter, and summer is the hard part. Setting slips out in March because a Jacksonville chart said so puts them into the wettest, hottest months. The calendar in When to Plant Sweet Potatoes in Florida explains the timing in more detail.
Why does a wet summer hurt sweet potatoes?
Jacksonville gets about 21.2 inches of rain across June, July and August, out of 53.4 inches for the year. June runs 7.6 inches, August 6.88, and even the driest summer month, July, gets 6.77. Roots sitting in soaked ground suffer, and close spacing traps humid air under the vines, which slows drying after storms. Give vines room, and plant on ridges or raised rows if the bed holds water.
Sand complicates the picture. A summer thunderstorm often runs off or drains straight through, so a bed that looks wet on the surface can be dry a few inches down within a day. Watering on a fixed schedule fails on sand in summer, especially with many days a year at 90°F or above pulling moisture out of the ground. Those rainfall numbers are what the area usually gets, and a straight-sided can set in your own bed will tell you what your plot actually received.
What goes wrong with timing in the north?
Slips set out at the early edge of the frost window can meet a late freeze, since that band is only a 30 to 70 percent range. Slow varieties planted late can run into the fall window, November 26 to December 13. Three of the last thirty falls at the Jacksonville airport saw no freeze at all, so a mild autumn is no reason to stretch a late planting. And since that airport is an inland site, coastal beds may run a little warmer and inland ones a little colder.
What changes across Florida
Florida does not have a single answer. The USDA Plant Hardiness Zone Map (2023 edition, built on 1991-2020 normals) places the state between zone 8b and zone 11b. That system rests on one variable, the average annual extreme minimum temperature, so it tells you how cold the worst night gets, not how wet or buggy the summer is.
The spread explains most of the regional advice. In the northern tier, near the Jacksonville reference city, frost sets the schedule: plant after soil warms, choose early finishers such as Georgia Jet or Beauregard, and dig before the first freeze. Coastal areas run milder than inland ones, so a beach garden and a garden farther west can differ in either direction.
Move down the peninsula and frost fades from the calculation. Central Florida can plant across a longer stretch, with winter the comfortable growing time and summer rain the main risk. In the far south, boniato and other dry-fleshed types earn their place because they handle humid heat and long seasons better than soft orange varieties. Fertile, moisture-holding pockets will still behave differently from sandy ridges.
Look up your location on the USDA hardiness map before you pick a variety. Your zone determines how much frost protection you need and when, and the map settles it better than a guess from a neighbor two counties over.
Where to check this for your own county
A county recommendation beats a state one. Soil, rainfall, pest pressure and frost risk shift enough between counties that a calendar written for the whole state is only a starting point.
Your local office of University of Florida IFAS Extension is the place to start. Look for the vegetable planting calendar written for your county, since north, central and south Florida each get a different one. Then look for the sweet potato varieties trialled where you live, along with notes on nematode tolerance and weevil management.
Ask three things when you call or visit:
- Which varieties have done well in county trials, and which have struggled?
- When do local growers set slips out, and when do they dig?
- Where can you buy clean, disease-free slips?
Extension agents also answer soil questions. A soil test and a drainage conversation can save a season, particularly if your yard has heavy patches or a perched water table.
Checking this against your own garden
Your own observations outrank every date here. Three are worth watching.
How the soil feels. Dig a few inches down. Soil that still feels cool and damp in the hand is not ready for slips, and soil that feels comfortably warm is. Beds on a south-facing wall or a sandy rise warm first, so they reveal your warmest microclimate.
The first new leaves on the slips. After planting, watch for fresh leaves to unfurl. Quick growth means the roots found warmth and moisture. Slow or yellowing growth points to cold soil, a soggy spot or a bed that dried out between waterings.
How long water stands after a storm. Check the bed an hour after a heavy summer downpour. Puddles that linger mean the roots are at risk and the row needs to be higher. If the surface is dry already, plan on extra watering during the dry spells between storms.
One more detail for the north: after a freeze blackens the vines, dig promptly.
Common questions
What is the best sweet potato variety for Florida?
Beauregard and Georgia Jet are dependable orange-fleshed choices for north Florida because they finish early. Boniato and other dry, white-fleshed types suit the central and south regions. Your county extension office can name the varieties that did best in local trials.
Can you grow sweet potatoes in the summer in central and south Florida?
You can, but summer is the hard season there. Frost does not stop the crop, so winter becomes the main season, while summer rain and heat bring rot, disease and pest pressure.
Do sweet potatoes need much watering in sandy soil?
Newly planted slips need regular water until they establish, since sand drains within the day. Once the vines cover the ground, they manage on rainfall in most summers, though a dry stretch with temperatures above 90°F may call for watering.
Are purple sweet potatoes worth trying?
Yes. Murasaki, with purple skin and pale flesh, and Stokes Purple, with purple flesh, grow under the same conditions as other types. They make a good second bed, but check county trials before relying on them for your main crop.