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
Light Requirements
Full Sun
Full Sun
Annual Rainfall
Drought Resistant / Waterwise
10 to 20", 20 to 30", 30 to 40", 40 to 50"
Bloom Time Late spring to early summer
Shipping Shipping begins in late February based on ground temperatures, warmest zones first. 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)
HBLQ351 (Plant - 5" deep pot)
Common Name Zagreb Whorled Tickseed
Botanical Name Coreopsis verticilliata Zagreb
Zones 3, 4, 5, 6, 7, 8, 9
Light Requirements Full Sun
Flower Color Yellow
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
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. Spring-Planted Perennial and Bulb orders will ship from February 27-June 30, warmest zones first. Most plant orders will arrive within 3-4 days, or less, of leaving our greenhouses. This prompt delivery is provided without additional express charges.

Grass Plugs Will ship at planting time in spring 2017, beginning in late February.

Wildflower Seed & Grass Seed Orders ship within 2-3 days.

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

Make Fast Even Faster: For ‘Rush’ same week delivery, please call customer service at 800-925-9387.

More Shipping Info

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High Country GardensCoreopsis verticillata Zagreb
 
3.0

(based on 2 reviews)

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4.0

Good

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from Meridian, ID

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      Comments about High Country Gardens Coreopsis verticillata Zagreb:

      Good first year.

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      • Personal

      (2 of 2 customers found this review helpful)

       
      2.0

      Tickseeds difficulty

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      from Kennedy meadows, Ca

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          Comments about High Country Gardens Coreopsis verticillata Zagreb:

          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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          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).

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