How to Grow Phlox

Decide which phlox variety you want to grow., Choose a location for growing phlox., Look for soil that is moist but well-drained., Till the soil and add compost., Plant phlox outdoors after all signs of frost have passed., Water phlox thoroughly...

11 Steps 4 min read Medium

Step-by-Step Guide

  1. Step 1: Decide which phlox variety you want to grow.

    All species of phlox produce flowers in a wide range of colors including white, pink, red, lavender and blue.

    Different varieties serve different needs in the garden.

    Do some research to decide which one is right for your growing zone.Purchase potted phlox plants sold locally at garden centers or farmer's markets for transplanting any time during the growing season.

    Your local garden center or nursery can advise you on which species grow best in your area.

    Garden and meadow phlox are perfect for garden borders, since they grow quite wide and tall.Low-growing phlox varieties are perfect to use as groundcover in shady areas, especially as many are mildew-resistant.

    You can also buy bare-root plants from a mail order company, but bare root plants are best planted in the spring.
  2. Step 2: Choose a location for growing phlox.

    Phlox are hardy, low maintenance flowers that do well in most locations.

    Most varieties of phlox prefer full sun, but some are tolerant of partial or filtered shade.

    Find a location that works for the variety you have chosen.

    Phlox grown in the shade often produce fewer flowers.

    They are also at increased risk for contracting a disease, so if you choose to plant phlox in the shade, look for a variety that is mildew-resistant. , Phlox need plenty of moisture to do well, but they shouldn't be waterlogged.

    To make sure your soil drains well, take a look at it after a heavy rain.

    If you see standing water and puddles there, the soil doesn't have good drainage.

    If the area is wet, but not soaking, it should be fine for growing phlox. , Phlox like rich soil, so it's necessary to work in some compost to ensure they grow healthy and strong.

    Till the soil to a depth of 12 inches (30 cm) and amend it with organic compost or peat moss., Dig holes 6 to 24 inches (15 to 60 cm) apart depending on the species you are growing.

    Space shorter phlox varieties 6 to 12 inches (15 to 30 cm) apart.

    Space taller species 12 to 24 inches (30 to 60 cm) apart.

    The holes should be twice as wide as the plants' root balls.Set the phlox plants into the holes and pat soil around their bases.

    Water the phlox after planting. , Keep them well watered throughout the growing season; if the soil gets dry, the phlox will suffer.

    Water from the base of the plant, rather than from the top.

    Avoid getting their leaves wet to decrease the chances that mold and mildew will form on the plants. , Use well-rounded plant fertilizer like 10-10-10, which contains 10 percent nitrogen, 10 percent phosphate and 10 percent potash.

    Repeat a second application of the fertilizer when the plants are flowering.

    In subsequent years, add compost around the plants each spring. , Do it when when the days start getting hotter.

    The mulch helps to keep the soil moist and cool and helps with weed control.

    Add fresh mulch to your phlox at least once a year. , For tall-growing varieties, cut off all but 5 to 7 stems on each plant.

    This increases air circulation to the stems, increasing blooms and reducing chances of disease.

    Pinch off the growing tips of the remaining stems to slow down the growth and encourage the plants to fill out.

    Start when they are around 6 inches (15 cm) tall if you are growing a tall species of phlox.

    Shorter phlox species that you are not growing as ground cover can also be pruned when they are 4 to 6 inches tall (10 to 15 cm). , Some varieties of phlox will bloom a second time if you deadhead the plants when the flowers die. , Dig the entire plant out of the ground so you can see its root structure.

    Cut sections off the outer-edge of the plant clusters that have plant growth and buds.

    If the inner section of the cluster has become woody, trim off and discard the woody parts.

    Replant a piece of the original back in the original hole.

    Move the other pieces to new areas for planting.
  3. Step 3: Look for soil that is moist but well-drained.

  4. Step 4: Till the soil and add compost.

  5. Step 5: Plant phlox outdoors after all signs of frost have passed.

  6. Step 6: Water phlox thoroughly.

  7. Step 7: Fertilize the plants once they are in the ground.

  8. Step 8: Mulch the area around the plants at the start of summer.

  9. Step 9: Prune your phlox.

  10. Step 10: Remove the dead flower clusters from the plants when flowering is done.

  11. Step 11: Divide the plants every 3 to 5 years to propagate them and prevent over-crowding.

Detailed Guide

All species of phlox produce flowers in a wide range of colors including white, pink, red, lavender and blue.

Different varieties serve different needs in the garden.

Do some research to decide which one is right for your growing zone.Purchase potted phlox plants sold locally at garden centers or farmer's markets for transplanting any time during the growing season.

Your local garden center or nursery can advise you on which species grow best in your area.

Garden and meadow phlox are perfect for garden borders, since they grow quite wide and tall.Low-growing phlox varieties are perfect to use as groundcover in shady areas, especially as many are mildew-resistant.

You can also buy bare-root plants from a mail order company, but bare root plants are best planted in the spring.

Phlox are hardy, low maintenance flowers that do well in most locations.

Most varieties of phlox prefer full sun, but some are tolerant of partial or filtered shade.

Find a location that works for the variety you have chosen.

Phlox grown in the shade often produce fewer flowers.

They are also at increased risk for contracting a disease, so if you choose to plant phlox in the shade, look for a variety that is mildew-resistant. , Phlox need plenty of moisture to do well, but they shouldn't be waterlogged.

To make sure your soil drains well, take a look at it after a heavy rain.

If you see standing water and puddles there, the soil doesn't have good drainage.

If the area is wet, but not soaking, it should be fine for growing phlox. , Phlox like rich soil, so it's necessary to work in some compost to ensure they grow healthy and strong.

Till the soil to a depth of 12 inches (30 cm) and amend it with organic compost or peat moss., Dig holes 6 to 24 inches (15 to 60 cm) apart depending on the species you are growing.

Space shorter phlox varieties 6 to 12 inches (15 to 30 cm) apart.

Space taller species 12 to 24 inches (30 to 60 cm) apart.

The holes should be twice as wide as the plants' root balls.Set the phlox plants into the holes and pat soil around their bases.

Water the phlox after planting. , Keep them well watered throughout the growing season; if the soil gets dry, the phlox will suffer.

Water from the base of the plant, rather than from the top.

Avoid getting their leaves wet to decrease the chances that mold and mildew will form on the plants. , Use well-rounded plant fertilizer like 10-10-10, which contains 10 percent nitrogen, 10 percent phosphate and 10 percent potash.

Repeat a second application of the fertilizer when the plants are flowering.

In subsequent years, add compost around the plants each spring. , Do it when when the days start getting hotter.

The mulch helps to keep the soil moist and cool and helps with weed control.

Add fresh mulch to your phlox at least once a year. , For tall-growing varieties, cut off all but 5 to 7 stems on each plant.

This increases air circulation to the stems, increasing blooms and reducing chances of disease.

Pinch off the growing tips of the remaining stems to slow down the growth and encourage the plants to fill out.

Start when they are around 6 inches (15 cm) tall if you are growing a tall species of phlox.

Shorter phlox species that you are not growing as ground cover can also be pruned when they are 4 to 6 inches tall (10 to 15 cm). , Some varieties of phlox will bloom a second time if you deadhead the plants when the flowers die. , Dig the entire plant out of the ground so you can see its root structure.

Cut sections off the outer-edge of the plant clusters that have plant growth and buds.

If the inner section of the cluster has become woody, trim off and discard the woody parts.

Replant a piece of the original back in the original hole.

Move the other pieces to new areas for planting.

About the Author

E

Edward Harris

Experienced content creator specializing in home improvement guides and tutorials.

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