Phlox divaricata laphamii
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Phlox divaricata laphamii

Phlox divaricata laphamii

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SKU: F36005
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Quick Facts
Common Name: Wild Blue Phlox
Hardiness Zone: 3-8S/9W Exposure: Part Shade
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Blooms In: Apr-Jun
Mature Height: 15" Spacing: 12-18"
Read our Growing Guide Ships as: 1 PINT 28.86 CU IN.
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Product Details

Product Details

The carefree Phlox divaricata laphamii boasts rich crystal blue flowers that appear early in spring. They're a marvelous color that will light up your shade garden in spring and ask little in return.

Phlox divaricata (Wild Blue Phlox, Wild Sweet William, or Woodland Phlox) is a native North American wildflower most commonly found in sunny or part-sun patches in woodlands and fields and along the banks of streams. These upright plants flower in spring, producing loose, flat clusters of five-petaled blossoms with notched petals. The blossom colors range from lavender to pink to blue, depending on the variety. The plants will spread over time to form charming, fuss-free colonies.

The varied, versatile, and indispensable Phlox genus includes almost 70 species of perennials and annuals. The majority of these low-maintenance plants are native to North America where they can be found in a range of habitats from woodlands and meadows to rocky alpine areas. All have tubular flowers that attract hummingbirds, hummingbird moths (also called hawk moths), long-tongued bees and butterflies. Most have a spicy vanilla-clove perfume that delights us as well.

For more information on the growing and care of Phlox, click Growing Guide.




The size of the plants we ship has been selected to reduce the shock of transplanting. For some, this means a large, bareroot crown. Others cannot travel bareroot or transplant best if grown in containers. We ship these perennials and annuals in 1 pint pots, except as noted. We must point out that many perennials will not bloom the first year after planting, but will the following year, amply rewarding your patience. We ship bulbs as dormant, bare bulbs, sometimes with some wood shavings or moss. Shrubs, Roses, vines, and other woody plants may be shipped bareroot or in pots. The size of the pot is noted in the quick facts for each item.


We ship our bulbs and plants at the right time for planting in your area, except as noted, with orders dispatched on a first-come, first-served basis by climate zone. We also ship a wide range of containers and planters, tools, supplies, fertilizers, garden wear, garden decor items, as well as indoor decorations like wreaths and dried bouquets when available. Estimated dates for shipping are indicated in the green Shipping Details box for each item. Please supply a street address for delivery. Kindly contact us with two weeks notice, if you'll be away at the expected time of delivery.


We guarantee to ship plants that are in prime condition for growing. If your order is damaged or fails to meet your expectations, we will cheerfully replace or refund it. Please contact our Customer Service Department at 1-800-503-9624 or email us at [email protected]. Please include your order number or customer number when contacting us.



Average Customer Rating: 3.5 out of 5 stars (3 Reviews) Write a Review

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Beautiful in early spring!

These Phlox divaricata laphamii I planted in spring 2014, and they have come up for the third time, in quite a shady corner, a little fuller than each of the previous years. I then planted two more, either spring or fall 2015, so they came up in 2016 and now magnificently in 2017. They grow in mostly shady conditions, but better in more sunny conditions, just a few feet away. They are planted toward the front of the border and do reach over the edge, toward the sun. I may try to plant them in the deeper shade toward the back of the border in fall 2017. They are spectacular: gauzy blue/violet leafy green.

24 of 24 people found this review helpful. Do you? yes no  Certified buyer

Beautiful in the right spot!

If this lovely plant is planted in the correct location it is stunning. Soft delicate shade of blue that is a nice addition to a spring garden. Definitely needs a shady woodland location. Bloomed the first spring after being planted in the fall. This is the second year and it is in full bloom now mid April. I was hoping for more but unfortunately it is out of stock.

20 of 20 people found this review helpful. Do you? yes no  Certified buyer


These sad plants never grew. One plant got to be about a six inch twig, one grew a single leaf a little less than two inches, and one showed green just above the soil and then just stayed there. They sort of froze in place for nearly two months and then just disappeared. However, customer service was in touch as soon as they read the review. I chose a store credit rather than a replacement, but I must absolutely complement the speed and courtesy of customer service.

28 of 30 people found this review helpful. Do you? yes no

Growing guide

Growing guide
Print Grow Guide

Latin Name Pronunciation: floks  

This important genus of valuable garden plants includes reliable and colorful species that bloom both early and late, in sun and shade, and in a range of rich colors that is equaled by few other genera. Most Phlox grow best in full sun (or partial shade in the South) and moist, well-drained soil.

P. divaricata laphamii is at its best in partial shade and in well-drained soil enriched with organic matter. Plants prefer soil with a slightly acid to neutral pH. They have an informal habit and root where the stems touch the ground, allowing them to form a ground cover where conditions suit them. Cut flowering stems to the ground after the blooms fade to keep plants looking tidy.

P. paniculata and, to a lesser extent, P. carolina and P. maculata are susceptible to powdery mildew, especially in dry soil. Water deeply during dry spells to reduce the incidence of disease, and dust with sulfur (available at most garden centers) beginning in early summer. Thinning half of the shoots when 6″ tall in spring (to allow better air circulation) also helps keep mildew at bay and encourages plants to produce larger and longer-lasting flower heads.

Divide P. paniculata every few years, replanting sections from the edge of the clump and discarding the woody center.

Shop All Phlox

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