Seasonal beds succeed when temperature, rainfall and day length guide the palette. Explore six September-through-December selections designed for the Gulf Coast transition from humid late summer into winter.
06 focused selections04 performance seasonsGulf Coast field guidance
Florida performance calendar
Select the season—not just the color.
Plants appear in every season where they perform reliably. The highlighted “best” window identifies when each earns its place in a Gulf Coast rotation.
01Spring · Summer · Fall
Best performance · September–October
Angelonia
Angelonia angustifolia
The dependable warm-season bridge while September beds are still too hot for cool-season annuals.
Planting window
Install in September for immediate color through the warm early fall; replace when repeated cool nights reduce flowering.
Sun tolerance
Full sun · High heat tolerance
Moisture tolerance
Moderate; evenly moist during establishment, then allow slight drying between irrigation
Mature height
12–24 in
Spacing
10–14 in on center
Color range
White, pink, rose, lavender, purple and bicolors
Care & fertilization
Use well-drained soil and avoid beds that remain saturated after rain.
Water at the soil line and allow foliage to dry; established plants tolerate short dry periods.
Most modern cultivars are self-cleaning; lightly shear only when plants become open or uneven.
Fertilization: Use a controlled-release landscape or container fertilizer at the labeled rate. Avoid excess nitrogen, which can produce soft growth with fewer flowers.
Pests & problems
Aphids and whiteflies
Inspect growing tips and leaf undersides; conserve beneficial insects and use insecticidal soap or horticultural oil only when the label permits and active populations justify treatment.
Root and crown rot
Prevent with drainage, correct planting depth and irrigation timing. Remove collapsing plants; fungicide is not a substitute for correcting saturation.
Purple Angelonia + white Pentas + silver Dusty Miller
White Angelonia + magenta Pentas + chartreuse foliage
02Spring · Summer · Fall
Best performance · September–October
Pentas
Pentas lanceolata
A pollinator-friendly September anchor that holds color through the humid transition into fall.
Planting window
Install through September and early October for warm-season color; performance slows with cold weather and frost.
Sun tolerance
Full sun to part sun · High
Moisture tolerance
Moderate; consistent moisture with positive drainage
Mature height
12–24 in for compact bedding cultivars
Spacing
12–18 in on center
Color range
Red, pink, lavender and white
Care & fertilization
Select compact, mildew-resistant bedding cultivars rather than tall landscape forms where a low mass is required.
Deadhead or lightly trim spent clusters if the cultivar does not self-clean.
Protect from prolonged saturation and place for air movement.
Fertilization: Apply controlled-release fertilizer according to the product label and plant response. Do not push excessive tender growth during wet weather.
Pests & problems
Whiteflies, aphids and spider mites
Confirm live insects before treating. Start with water management and natural enemies; use a labeled soap or oil for accessible infestations.
Botrytis and leaf spot
Space for airflow, irrigate early at soil level and remove declining flowers. Diagnose before applying any labeled fungicide.
The broadest color range of the cool-season group and one of the strongest choices for high-impact winter beds.
Planting window
Install from late October or November after persistent heat and heavy rain ease; peak performance is typically winter through early spring.
Sun tolerance
Full sun · Moderate heat tolerance
Moisture tolerance
Moderate; even moisture but intolerant of chronic wetness
Mature height
8–16 in
Spacing
10–16 in on center, by series
Color range
White, yellow, pink, red, purple, blue tones, black and patterned bicolors
Care & fertilization
Choose spreading or mounding series to match the intended bed depth.
Plant slightly high in amended, freely draining soil.
Trim leggy plants and remove declining blooms when needed; avoid keeping flowers wet overnight.
Fertilization: Use controlled-release fertilizer at planting and supplement only as the label and plant performance indicate. Containers generally exhaust nutrients faster than beds.
Pests & problems
Budworms and caterpillars
Look for chewed buds, petals and frass. Hand-pick where practical; Bacillus thuringiensis subsp. kurstaki may be considered for young caterpillars only when the label lists the site and pest.
Botrytis and root disease
Remove spent wet flowers, improve airflow and drainage, and avoid evening overhead irrigation. Replace plants with collapsing crowns.
Color combinations & uses
Landscape uses: Large color sweeps · Hanging baskets · Containers · Bed edges
Deep purple Petunia + white Snapdragon + Dusty Miller
White Petunia + burgundy Dianthus + silver foliage
04Winter · Spring · Fall
Best performance · November–March
Snapdragon
Antirrhinum majus
Use its upright flower spikes to give winter beds height and rhythm rather than relying on a flat carpet of color.
Planting window
Install November through December for winter spikes; use later plantings to extend display into early spring before heat rises.
Sun tolerance
Full sun · Low heat tolerance
Moisture tolerance
Moderate; evenly moist, never waterlogged
Mature height
8–36 in, by series
Spacing
8–12 in on center
Color range
White, yellow, peach, orange, pink, red, burgundy and bicolors
Care & fertilization
Specify dwarf, intermediate or tall cultivars intentionally; height varies dramatically.
Stake tall series where wind exposure warrants it.
Deadhead spent flower spikes and maintain airflow around the crown.
Fertilization: Use a balanced controlled-release product at the labeled rate. Excess nitrogen can produce soft stems and greater disease susceptibility.
Pests & problems
Rust and downy mildew
Start with resistant cultivars, clean stock, spacing and dry foliage. Remove affected plants and obtain a diagnosis before selecting any fungicide.
Aphids and thrips
Inspect new growth and flowers. Conserve beneficial insects and treat only active, damaging populations with a labeled option.
Pink Dianthus + lavender Petunia + white Snapdragon
06Winter · Spring · Fall
Best performance · November–April
Dusty Miller
Jacobaea maritima
The foliage neutral that separates strong flower colors and keeps a winter palette legible from the street.
Planting window
Install with the first cool-season rotation from late October through December; retain while foliage remains compact and clean.
Sun tolerance
Full sun · Moderate
Moisture tolerance
Low; drought tolerant after establishment and highly sensitive to wet crowns
Mature height
8–18 in
Spacing
10–14 in on center
Color range
Silver-white foliage
Care & fertilization
Place in the driest portion of the seasonal bed and keep mulch away from the crown.
Remove flower stalks when foliage—not bloom—is the design priority.
Replace stretched or rotting plants rather than repeatedly shearing weak crowns.
Fertilization: Feed lightly with a controlled-release product. Excess fertilizer and irrigation reduce the dense silver character that makes the plant useful.
Pests & problems
Root and crown rot
The primary defense is drainage. Reduce irrigation overlap, keep the crown exposed and remove collapsed plants.
Leaf miners and aphids
Inspect new foliage for mines or colonies. Cosmetic injury may not justify treatment; use only products labeled for the plant, pest and site.
Dusty Miller + burgundy Dianthus + white Snapdragon
Dusty Miller + purple Petunia + pink Dianthus
A better color rotation
Design the transition, not just installation day.
September is often too hot and wet for the cool-season plants people associate with fall. A staged rotation uses heat-tolerant color first, then introduces petunias, snapdragons, dianthus and silver foliage as nights cool.
