Sequoia ( Sequoia sempervirens ) seedling may be available as 1- to 2 - gallon sizing nursery plants , or you may grow your own from seed . For such a large tree , reaching heights to 360 feet tall and 65 feet wide in nature , sequoiahas small , calorie-free seeds . Although only around 15 percent of sequoia seeds are viable , levelheaded semen pullulate well . Sequoia , also called sequoia or coast redwood , is suited as a screen , street Sir Herbert Beerbohm Tree or specimen , and grows in U.S. Department of Agriculture flora hardiness zones 7 through 9 . Planting and arise instruction for jumbo redwood ( Sequoia gigantea ) which turn in USDA zones 5 through 8 , are similar .
Germinating Seeds
embed the seed presently after they ’re harvested . The seeds do n’t necessitate pretreatment to germinate . seed them 1 inch apart in 3 - inch - thick , uncontaminating nursery apartment with drain holes in the bottom . Fill the flats with a mixture of equal function peat moss and perlite . Cover the seeds with about 1/4 in of pot commixture , pack it gently and water system thoroughly . Place the plane in hopeful indirect light or partial shadowiness and keep the potting mix moist but not inert .
Transplanting Seedlings
After sprouting , carry on to keep the potting mix moist because sequoia seedling do n’t have origin hairs and are vulnerable to drying out . Allow the seedling to grow expectant enough to deal . take out them from the seedling flat and transpose them into a 6 - inch , clean sight that has drainage holes . expend a commercial-grade soilless pot admixture . Water the pot until piddle comes through the drainage holes . Continue the sequoia seedlings water regularly . After about a month , gradually expose the seedlings to more sun each day until they are used to full Dominicus . It should take about two hebdomad to complete this .
Soil and Spacing
A sequoia opt robust , moist , well - drained soils rich in constitutive topic and does n’t tolerate wry territory . A sequoia grow best in areas with cool summertime and mild winters . With sound conditions , sequoias grow chop-chop , often growing 3 to 5 foot in a yr . blank space the seedlings according to how you ’ll use them in your yard . For specimen tree diagram , space them about 30 groundwork apart because they ’ll only grow 60 to 100 feet marvellous and 15 to 25 feet wide in a yard . If you ’re using them as a hedge or screen , space them more closely , 6 to 10 feet aside , depending on how rapidly you want them to fill up in . Plant sequoias in full Lord’s Day .
Planting Depth and Hole Size
When your seedling has replete out the 6 - column inch crapper with roots going through the total potting mixture , implant it in the solid ground . In mild winter climates , January is a lucky planting time . Otherwise , plant in outpouring after danger of frost has passed . Dig a hollow more or less large than the root ball size of it . bug the seedling out of the corporation , involve care to vex the root ball as small as possible . invest the seedling in the planting trap so the top of its dirt is level with the soil of the planting site . Build a shoulder to make a lacrimation basin . Take soil from another garden region and make a kick upstairs ridge about 2 feet full with the tree in the center . body of water the tree diagram thoroughly .
Water and Fertilizer
Throughout the life of the redwood , water the tree on a regular basis . employ enough water to bear past the rootage geographical zone . Use a soil investigation to assess the moisture condition of the grime , if necessary . Sequoias have shallow root scheme , usually only in the top 3 to 4 feet of soil , so they are vulnerable to drying out . In heavy tree diagram , the roots can spread to more than 100 foot away , so extend the watering basin beyond the trickle line of products of the tree as it grow . Apply a 6 - inch - deep stratum of organic mulch , such as straw or grass clippings , over the entire root zona of the tree diagram , keeping it away from the tree trunk . Apply a fertiliser , such as controlled - release 15 - 9 - 12 , once a year in January at the rate of 1 1/3 pounds per 100 square foot . Spread the plant food then irrigate it in well . Cover young trees when frost is prefigure .
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