BWI is the least expensive airport to fly into in many cases, has the MARC train from the airport to Union Station (where you can pick up metro) and is an international airport.
Tips for Growing Tomatoes Indoors. How to sow tomato seed: Fill seed trays or small pots with moist, sterilized potting mix. Drop the seeds 1 in (2.5 cm) apart over the soil. Tomato seeds need light and warmth to germinate, so cover the seeds lightly -- never more than 1/4-in (.5 cm) -- with potting medium. Water and cover. Then, spray with water until thoroughly moist. Mist as needed to keep the medium moist at all times.
Tomato Plants Tomatoes can be grown either from seed started indoors, or from transplants purchased at your local garden center. There is usually a large selection of transplants available at reasonable prices this time of the year, and transplants are usually the easiest way to start your tomatoes. Select healthy plants that are 6 to 8 inches tall.