Coreopsis verticillata Zagreb

Zagreb Whorled Tickseed

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12-18" tall x 18-24" wide. Coreopsis 'Zagreb' is a long blooming, easy-to-grow perennial with a big display of brilliant golden-yellow flowers beginning in late spring. Drought resistant/drought tolerant plant (xeric).

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Zones 3 - 9
Advantages
Deer Resistant
Deer Resistant
Attract Butterflies
Attract Butterflies
Rabbit Resistant
Rabbit Resistant
Easy to grow
Good for Cut Flowers
Good for Containers
Native
Light Requirements
Full Sun
Full Sun
Annual Rainfall
1020
10 to 20"
2030
20 to 30"
3040
30 to 40"
4050
40 to 50"
Bloom Time Late spring to early summer
Shipping Shipping begins in early September, coldest zones first. Buy now and we'll ship your order at the ideal planting time for your region. Expected ship week will display at checkout after you enter your zip code. More shipping info Learn More…
SKU HBLQ2XX

Details

12-18" tall x 18-24" wide. Coreopsis 'Zagreb' is a superior flowering perennial that grows readily in a wide range of garden conditions. It begins blooming in late spring covering itself with large brilliant golden-yellow flowers into the summer. Shear back after the first flush of flowers to encourage re-blooming later in the summer. Zagreb Whorled Tickseed spreads gently by rhizomes and has attractive finely textured bright green foliage. With good resistance to browsing deer, the plant is easy-to-grow and is well adapted across much of the country. Named after the Croatian capital of Zagreb.
Associated SKUs
HBLQ2XX
HBLQ221 (Plant - 2.5" deep pot) - Out of stock.
HBLQ351 (Plant - 5" deep pot) - Out of stock.
Common Name Zagreb Whorled Tickseed
Botanical Name Coreopsis verticilliata Zagreb
Zones 3, 4, 5, 6, 7, 8, 9
Light Requirements Full Sun
Mature Height 12-18" tall
Mature Spread 18-24" wide
Bloom Time Late spring to early summer
Ships As Potted Plant
Planting Time Spring / Summer, Fall
Soil Type Clay Soil, Sandy Soil, Average Soil
Soil Moisture Drought Resistant / Waterwise
Amount of Rain 10 to 20", 20 to 30", 30 to 40", 40 to 50"
Advantages Deer Resistant, Attract Butterflies, Rabbit Resistant, Easy to grow, Good for Cut Flowers, Good for Containers, Native
Ideal Region Anywhere In The US, Northeast, Midwest, Southwest, West, Pacific Northwest
Neonicotinoid-Free Yes - Learn More
Ships to Hawaii, Alaska & Canada No

Planting Guides

Tips For Growing Coreopsis (Tickseed)

Coreopsis (Tickseed) are long-blooming native wildflowers that are easy-to-grow and provide ample nectar for butterflies. They're resistant to browsing rabbits and deer. Coreopsis can be divided into two groups that have different growing requirements: Coreopsis grandiflora and Coreopsis verticiliata (Threadleaf Tickseed) cultivars and hybrids.

1. Coreopsis grandiflora types (Tickseed) - these cultivars are generally grown from seed and are a short-lived perennial (3 to 4 years).

Preferred growing conditions:

  • Needs sandy/gravely and sandy loam type soils. Avoid clay.
  • Does best with gravel mulches.
  • After their second growing season, only requires deep but infrequent watering. Too much water makes them floppy and shortens their lifespan.
  • Plant in full hot sun.
  • Adding just a few handfuls of compost and Yum Yum Mix in the planting hole is enough. Don't plant into a rich, highly-amended soil.

Special comments

  • Deadhead plants to prolong bloom. Leave a few seed pods on the plants to encourage re-seeding.

2. Coreopsis verticillata (Threadleaf tickseed) and hybrids - These are long-lived perennials that spread by rhizomes to form wide, dense growing clumps.

Preferred growing conditions:

  • These species grow in a wide range of soil types including clay. Avoid very alkaline soils as they may get chlorotic (yellow foliage) due to unavailability of iron and other trace minerals.
  • These plants don't need mulching except in hot climates.
  • These are moisture-loving perennials and do best in moderately moist soil conditions.
  • Plant in full sun areas.
  • They like compost-enriched soils at planting time.

Special comments

Threadleaf tickseed plants are often late to wake in spring from dormancy, so don't worry when other neighboring perennials wake up first.

Garden care for all types of Coreopsis:

  • Fertilize Coreopsis just once in fall with Yum Yum Mix and Planters II. In addition, for C. verticillata types, green sand is recommended for alkaline soils to correct or prevent chlorosis.
  • Plants can be divided in mid-spring when clumps die-out in the center or become too large for their place in the garden.
  • Leave all Coreopsis varieties standing over the winter and cut back to 1-2" inches above the soil in mid-spring when the plants begin to wake up.

View more Planting Guides, or download our complete Planting Guide for tips on caring for your plants when you receive your order, as well as planting instructions for Perennials, Spring-Planted Bulbs, Fall-Planted Bulbs, Cacti & Succulents, Xeric Plants and more.

Shipping

Plant Shipping: Buy now and we will ship your order at the ideal planting time for your region. Fall shipping begins the week of September 4 (zones 3-4 first) and ends in early November. Expected ship week will display at checkout after you enter your zip code.

Most plant and bulb orders arrive within 2-6 days, or less, of leaving our greenhouse in Colorado. This prompt delivery is provided without additional express charges.

Grass Plugs & Seed: Most orders ship within 5-8 business days (all zones).

Gardening Goods:All non-plant items ship within 2-3 days.

Standard shipping costs are $4.99 and up, depending on the size of the order.

More Shipping Info.

Reviewsby PowerReviews

REVIEW SNAPSHOT®

by PowerReviews
 
2.4

(based on 5 reviews)

Ratings Distribution

  • 5 Stars

     

    (0)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (2)

40%

of respondents would recommend this to a friend.

Pros

No Pros

Cons

No Cons

Best Uses

No Best Uses
    • Reviewer Profile:
    • Avid gardener (3)
    • Primary use:
    • Personal (3)

Reviewed by 5 customers

Displaying reviews 1-5

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4.0

Keeps Coming Back!

By 

from UT

Verified Reviewer

Pros

  • Hardy

Cons

  • Deer Like It

Best Uses

    I planted this two years ago in a south facing garden with clay soil, zone 6b. It arrived healthy and looked nice. However, I have young children who were not used to having anything in that particular garden bed, and on a couple of occasions the plant suffered casualties from children stepping on it. We also have deer visit our area who like to nibble on it. Despite being eaten/broken down to the base over and over, this little plant kept coming back. Finally, after placing a mesh screen around it for a month or so last year it managed to grow to a respectable size and looked beautiful! When I went to look on it this spring I saw that it had been eaten down to the main shoot again by deer. I was disappointed at first, but then noticed numerous small shoots coming up around it. I anticipate it will come back and flower beautifully again this year.

     
    1.0

    Never again.

    By 

    from Santa Fe, NM

    About Me Avid Gardener

    Verified Buyer

    Pros

      Cons

      • Flimsy
      • Small In Size
      • Unattractive

      Best Uses

      • Garden
      • Outdoors

      The first set of 3 came in my Jumbo Waterwise Garden. They seemed dead, but the instructions said they often LOOK dead but are not. I planted them following the instructions. While the plants around them grew and thrived, they did NOTHING. Called Customer Service, and was told to wait a couple more weeks. Still NO GROWTH. Called Customer Service again: they sent out 3 more plants to fill in my JWG. Those 3 ALSO looked dead on arrival, but planted them anyway and crossed my fingers. NOPE. NADA. Will never attempt planting this variety of coreopsis again.

      • Primary use:
      • Personal

      (1 of 1 customers found this review helpful)

       
      1.0

      Disappointing Growth and Stamina

      By 

      from Los Alamos, NM

      Verified Reviewer

      I planted one in early April and four more in mid-June. All plants arrived with very little growth above the crown.

      The early Spring plant never grew, and I ultimately received a product credit for it. Of the four that I planted in the Summer, two are showing growth above the ground, but no more than an inch. The other two were planted and watered according to the directions, but have not thrived in Zone 7.

      Go with the Coreopsis Lanceolata Sterntaler instead. Once planted, it took off.

       
      4.0

      Good

      By 

      from Meridian, Idaho

      About Me Avid Gardener

      See all my reviews

      Verified Buyer

      Pros

        Cons

          Best Uses

          • Garden

          Good first year.

          • Primary use:
          • Personal

          (6 of 6 customers found this review helpful)

           
          2.0

          Tickseeds difficulty

          By 

          from Kennedy meadows, Ca

          About Me Avid Gardener

          Pros

            Cons

            • Difficult To Grow

            Best Uses

              First let me state that I love HCG. I have a front bed full of their plants. However, this plant was a real disappointment. I live in the Sierra above 6500 feet. I could not even get the tickseeds to survive in my green house. I does not appear to be a robust plant.

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              • Personal

              Displaying reviews 1-5

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              Q & A

              Suggested Companion Plants:

              USDA Hardiness Planting Zones

              To determine if a plant is sufficiently cold hardy, the USDA created numbered zones indicating winter low temperatures; the lower the zone number the colder the winter.

              • If the coldest winter temperature expected in your area is -15°F (zone 5) then any plants rated zones 3-5 will survive the winter temperatures in your area.
              • If you live in very warm winter areas (zones 9-11) plants with zones 3-4 ratings are not recommended. The lack of freezing winter temperatures do not provide a time for winter dormancy (rest).

              Find Your Planting Zone:

              Enter your Zip Code to find your USDA Planting Zone

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