Plants Beginning with D

Hints:

Temperature: The temperatures aren't set in stone, as most annuals should pop up at any temperatures between 70 and 80 degrees, while some tropicals will prefer the higher end of that range. Perennials and hardy annuals, which tend to like cooler conditions, usually will sprout at any temperatures between 60 and 70 degrees.

Moisture: To keep the seed starting mix moist for your seeds, cover their containers with plastic wrap until the seeds begin to sprout. Use aluminum foil instead for those which prefer darkness for germination.

Chipping or Sanding Seeds: These processes are only ncessary for seeds that have very hard coats, which water won't penetrate. To protect your fingers, hold each seed between the "jaws" of needle-nose pliers on top of a cutting board as you nick it with the tip of a utility knife. To sand the seed instead, rub it against an emery board or sandpaper until you break through the seed coat.

Soaking Seeds: You easily can soak seeds overnight in Styrofoam cups, writing the name of each seed on the side of its cup. If you need to heat the soak-ing water to a certain temperature, use a candy thermometer to measure that temper-ature. Otherwise, use lukewarm (room temperature) water.

Gibberellic Acid: If you need to use gibberellic acid, dissolve a 100 mg packet of the white powder in about 1/2 cup of water overnight. Then add an equal amount of water to the mix to make a 500 ppm solution, which is best for most species, before soaking your seeds in the solution overnight.

Smoke Treatment: For seeds that require smoke treatment, add 1 teaspoon commercial smoke flavoring to every 3 tablespoons of water you are using. For the best results, find a flavoring that contains only smoke and water in its ingredients list.

Cold or Warm Treatment: When seeds need to be kept damp and either warm or cold for a certain number of months, fold a paper towel into a card shape. After writing the name of the seeds and the date on front of the "card" with an indelible marker, soak the paper towel in water, squeeze out the excess water, and place the seeds inside the card.

You can keep several such cards inside a folded-over sandwich bag to help preserve their moisture.

Keep in mind that, when a seed begins to sprout inside the towels, the first thing to emerge usually is a radicle (main root). So, if you pot up the seed at that point, be sure that you position it with the root underground and lower than the seed from which it is protruding.

Plants Beginning with D

Dahlia: Sow the seeds 1/4 inch (6 mm) deep in damp and sterile seed-starting mix. Keep the container at 70 degrees (21 degrees Celsius) and the seeds should sprout in 3 to 5 days.

Datura (devil's trumpet): Press the seeds into the surface of damp and sterile seed-starting mix, but don’t cover them with the mix. Place their container under a grow light at 70 degrees (21 degrees Celsius) and the seeds should sprout in 7 to 21 days.

Daucus (Queen Anne's lace): Sow the seeds in damp and sterile seed-starting mix, barely covering them with the mix. Keep their container at 68 degrees (20 degrees Celsius) until the seeds sprout, usually in 1 to 3 weeks.

Delphinium: Sow the seeds 1/16 inch (1.5 mm) deep in damp and sterile seed starting mix. Keep their container at 68 degrees (20 degrees Celsius) until the seeds sprout, usually in 7 days or so.

Dendroseris (cabbage tree): Soak the seeds for 12 hours before sowing them 1/8 inch deep in damp and sterile seed starting mix. Keep their container at 70 degrees (21 degrees Celsius) and the seeds should sprout in 2 to 4 weeks.

Dianthus (carnation or pink): Press the seeds into the surface of damp and sterile seed-starting mix, barely covering them with the mix. Place their containers under the center of a grow light at 68 degrees (20 degrees Celsius) until the seeds sprout, usually in 3 to 7 days.

Dicentra (bleeding heart): Place the seeds inside a damp paper towel in a baggie in your refrigerator for 3 months, before moving their towel and baggie to a location with a 70 degree (21 degrees Celsius) temperature. Once the seeds begin to sprout, usually within a few days after being removed from the refrigerator, pot them up in damp and sterile seed-starting mix.

Dichrostachys: Pour boiling water over the seeds and allow them to sit in the cooling water overnight. Then sow them 1/4 inch deep in sterilized cactus and citrus potting soil. Keep the container at 70 degrees (21 degrees Celsius) and the seeds should sprout in 10 to 21 days.

Dicksonia (tree fern): Scatter the spores over the surface of damp and sterile seed starting mix. Keep the container at 70 degrees (21 degrees Celsius) until the spores sprout, which often can take several months to a year or more.

Dierama (angel's fishing rod): Press the seeds into the surface of damp and sterile seed-starting mix, barely covering them with the mix. Place their containers under the center of a grow light at about 68 degrees (20 degrees Celsius) until the seeds sprout, which can take as long as 30 days or more.

Dietes (African iris): Soak the seeds overnight before sowing them in damp and sterile seed starting mix, barely covering them with the mix. Keep their container at 50 degrees (10 degrees Celsius) until the seeds sprout in 18 days to 3 months.

Digitalis (foxglove): Press the seeds into the surface of damp and sterile seed-starting mix, but don't cover them with the mix. Place their containers under the center of a grow light at 68 degrees (20 degrees Celsius) until the seeds sprout, usually in 7 to 9 days.

Diospyros (persimmon): Soak the seeds overnight before placing them inside a damp paper towel in a baggie in your refrigerator for 3 months. Then move their towel and baggie to a location with a 70 degree (21 degrees Celsius) temperature. Once the seeds begin to sprout, pot them up in damp and sterile seed-starting mix.

Diplarrena (butterfly iris): Sow the seeds in damp and sterile seed starting mix, barely covering them with that mix. Keep their container at about 68 degrees (20 degrees Celsius) until the seeds sprout in 2 to 4 weeks.

Discorea: Remove the wings from the seeds and sow them 1/2 inch (12.7 mm) deep in damp and sterilized cactus and citrus potting mix. Keep their container at about 68 degrees (20 degrees Celsius) until the seeds sprout in 2 to 3 weeks.

Dodecatheon (shooting star): Place the seeds inside a damp paper towel in a baggie in your refrigerator for 3 months, before moving their towel and baggie to a location with a 70 degree (21 degrees Celsius) temperature. Once the seeds begin to sprout, often shortly before the end of their cooling period, pot them up in damp and sterile seed-starting mix.

Dombeya: Scratch the seeds against an emery board, to break through their hard outer coating, before soaking them for a day or two. Then sow them 1/4 inch (6 mm) deep in damp and sterile seed-starting mix. Keep the container at 70 degrees (21 degrees Celsius) and the seeds should sprout in 2 to 3 months.

Doryanthes: Press the seeds into the surface of damp and sterile seed-starting mix, barely covering them with the mix. Place their containers under the center of a grow light at about 68 degrees (20 degrees Celsius) until the seeds sprout, usually in 15 days or so.

Dracaena: Press the seeds into the surface of damp and sterilized cactus and citrus potting mix, but don't cover them with the mix. Keep the container at 82 degrees (28 degrees Celsius) and the seeds should sprout in 1 to 6 months.