When to plant eggplants in Baltimore: 5 May – 2 August

In Baltimore, eggplant: sow for seedlings from 13 February to 3 June; plant into a greenhouse from 14 April to 2 August; plant out into open ground from 5 May to 2 August.

Eggplant in Baltimore: soil, season and weather

In Baltimore the soil, not frost, sets the date: the last frost is over around 31 March, but the top 7 cm of soil reaches 18 °C — the minimum on the eggplant card — only around 5 May, 35 days later.

Last spring frost	31 March
Top 7 cm of soil at 18 °C	5 May, 35 days after the last frost
Into an unheated greenhouse	14 April – 2 August; April outside: 8.6 °C at night, 17.5 °C by day; card 21–29 °C
First autumn frost	22 November, 201 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	14 July – 11 October
Days left for picking	131
Daylight	11:31 on 6 March, 13:59 on 5 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, November, has 8 rainy days

The same dates in Baltimore hold for Cucumber, Bell Pepper, Zucchini, Pumpkin and Watermelon.

Eggplant in Baltimore: care after planting

Planted on 5 May: in the first weeks water every 4 days.

Feeding, by the card’s schedule from that day:

5 May — feed: balanced (NPK)
2 June — feed: nitrogen

Pests and diseases of eggplant to watch for:

Dates count from the first planting day of the window above; a later planting moves them by as many days.

Weather in Baltimore during the eggplant season

Days average above the eggplant card's 21–29 °C in July (30 °C). Months that stay below 21 °C even by day on average: October (19.7 °C) and November (13.1 °C). Nights average below 21 °C in May, June and September–November (5.6–19.2 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	21.9	13.9	163	14	14:19
June	27.3	19.2	139	13	14:55
July	30	22.5	191	16	14:41
August	28.5	21.4	162	13	13:44
September	25.5	18.4	146	11	12:29
October	19.7	12.4	102	9	11:13
November	13.1	5.6	88	8	10:03

ERA5 2016–2025, Open-Meteo

Eggplant in nearby cities

Around Baltimore, Washington, D.C. is 1 day earlier and Harrisburg 20 days later.

City	Distance	Date	Difference
Annapolis	37 km	8 May – 30 July	3 days later
Washington, D.C.	56 km	4 May – 27 July	1 day earlier
Dover	95 km	11 May – 6 August	6 days later
Hagerstown	104 km	23 May – 22 July	18 days later
Harrisburg	111 km	25 May – 22 July	20 days later
Philadelphia	144 km	14 May – 22 July	9 days later

Where to buy eggplant plants and seeds near Baltimore

Buy plants ready to set out from 5 May to 2 August (from 14 April to 2 August for an unheated greenhouse); seed for raising your own is sown from 13 February to 3 June. Within 15 km of Baltimore OpenStreetMap lists 8 garden centres, 4 plant nurseries, 20 markets and 3 farm shops (collected 20 October 2026).

Cross Street Market — market
South Charles Street 1065, 21230 Baltimore · 2 km · bpmarkets.com
32nd Street Farmer's Market — market
Sat 07:00–12:00 · 4 km · 32ndstreetmarket.org
Hollins Market — market
South Arlington Avenue;South Carrollton Avenue 26, 21223 Baltimore · 2 km
El Imperio Latin Market — market
Eastpoint Mall 7715, 21224 Highlandtown · 9 km

Each window starts on the Greenly calendar date and ends on the last day that still leaves the crop’s days to harvest (from its card) before the average first autumn frost, plus six weeks of picking for crops harvested over weeks (tomatoes, peppers, aubergines, cucumbers, courgettes, pumpkins, watermelons, beans) — our rule; earlier in the window is safer.

Questions