Identify your climate zone. The United States Department of Agriculture (USDA) developed a climate zone map that bases each zone on the lowest recorded temperatures. Zone 1 is the coldest, while zone 11 is the warmest. Plants are classified by the coldest temperature they can withstand. This is crucial information when sowing seeds outdoors. For example, if you live in zone 6, sow carrot seeds outdoors in May and June. However, if you live in zone 4, wait until June or July to plant your carrot seeds. Sowing your seeds at the right time of year for your climate zone means your seeds will be more likely to germinate and produce.
Direct sow your Burpee seeds by planting them directly into the ground outside. Different types of seed have different planting depths. Generally, smaller seeds do not need to be planted as deeply as larger seeds. For smaller Burpee seeds, scatter them on the ground and then cover them with a thin layer of compost. Pat down the ground to make sure there is good seed-to-soil contact. Water and mulch. For larger seeds, read the back of your seed packet for the recommended depth. The rule of thumb is that a seed should be planted at a depth that's two to three times its size. Poke a hole in the planting area with your finger and drop in the seeds. Usually it is best to plant two seeds in each planting hole in case one of the seeds does not germinate. If both seeds germinate, thin them out by removing the weaker plant. Cover the planting hole, water and mulch.
Start your Burpee seeds indoors during the winter to produce plants that will flower or bear fruit earlier in the spring after the seedlings are transplanted. Fill a container to about 1 inch from the top with a good growing medium; peat moss is the medium most commonly used. Plant about two seeds per container. Moisten with warm water and pat down to ensure good seed-to-soil contact.
Cover your indoor seedlings with clear plastic, creating a mini-greenhouse. Place them under a grow-light, or in a well-lighted area. Check the moisture level daily. The soil should be kept moist, but not soggy. As the seeds begin to sprout and take hold, remove the clear plastic. Thin out seedlings, if necessary.