Rioja Spanish Red Bulb Collection

The Rioja Spanish Red Bulb Collection features a trio of fascinating bold red flowers. Spectacular petals and dramatic patterns will grace your garden from spring through frost. This collection of Aztec Lily (Sprekelia formosissima), Red Tiger Flowers (Tigridia pavonia), and Nuit D'Ete Cactus Dahlia will thrive in warm, full-sun gardens. Collection of 19 bulbs.
Zones2 - 10
Attract Butterflies
Extended Bloom Time (more than 4 weeks)
Easy To Grow
Good For Containers
Light Requirements
Full Sun
Morning Sun & Afternoon Shade
Water Tolerance
Mature Spread Varies
Mexican Shellflower: 12-18" tall
Aztec Lily: 6-12" tall
Nuit D'ete Cactus Dahlia: 36" tall
Bulb SpacingVaries:
Mexican Shellflower: 9 bulbs per sq. ft.
Aztec Lily: 5 bulbs per sq. ft.
Nuit D'ete Cactus Dahlia: 1 bulb per sq. ft.
Bloom TimeEarly summer to frost
Shipping DetailsNow shipping to zones 7-10.
Other zones shipping soon.
Learn More…
Item Package SizeCollection of 21

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:

Per Collection of 21
In stock
Add to Wish List

Shop Exclusive Deals


Enliven your garden with The Rioja Spanish Bulb Collection. The Aztec Lily (Sprekelia formosissima) blooms first, with spectacular red petals (6-12” tall). Mexican Shell Flowers, or Tiger Flowers (Tigridia pavonia) have an exotic orchid-like pattern, and they create an extraordinary sweep of color from mid-to-late summer (12-18” tall). Tigridia’s flowers last just one day, but its continuous parade of blooms will keep you in color for several weeks. The stunning Nuit D'Ete Dahlia will deliver the final display of burgundy petals blooming from early summer to frost (36” tall). Frequent deadheading encourages the production of more blooms, and the medium green foliage is typically pest and disease free. If these bulbs are not hardy in your zone, you can grow them as annuals, grow them in containers that can be brought indoors for cold seasons, or dig up bulbs before frost to store in a cool dry place for planting the following spring. Be sure to follow the appropriate planting depth for each unique bulb. Collection of 19 bulbs.

Rioja Spanish Red Bulb Collection Includes:

  • Aztec Lily (Sprekelia formosissima) - Bag of 1
  • Red Tiger Flowers (Tigridia pavonia) - Bag of 15
  • Nuit D'Ete Cactus Dahlia - Bag of 3

Bulbs are subject to change due to availability. If we make substitutions, we feature bulbs with similar attributes suitable to the collection design. Does not include planting map.

More Information
Common Name
Rioja Spanish Red Bulb Collection
Item Package Size
Collection of 21
Special Groups
High Country Gardens Exclusive
Flower Color
Light Requirements
Full Sun, Morning Sun & Afternoon Shade
Bloom Time
Early summer to frost
Mature Height
Mexican Shellflower: 12-18" tall
Aztec Lily: 6-12" tall
Nuit D'ete Cactus Dahlia: 36" tall
Bulb Spacing
Mexican Shellflower: 9 bulbs per sq. ft.
Aztec Lily: 5 bulbs per sq. ft.
Nuit D'ete Cactus Dahlia: 1 bulb per sq. ft.
Planting Depth
Mexican Shellflower: 2-3" deep
Aztec Lily: 2-3" deep
Nuit D'ete Cactus Dahlia: 1" below the soil line
Soil Type
Average Soil, Sandy Soil, Compost Enriched Garden Loam Soil
Soil Moisture
Ideal Region
Northeast, Southeast, Midwest, West, Southwest, Pacific Northwest
Attract Butterflies, Extended Bloom Time (more than 4 weeks), Easy To Grow, Good For Containers
Additional Information
Can be grown as an annual in zones 3-7. Perennial in zones 8-10.
2, 3, 4, 5, 6, 7, 8, 9, 10
Ships As
Bulb, Rhizome, Tuber
Item Unit Of Measure
Poisonous or Toxic to Animals
Planting Time
Spring / Summer
Ships To Canada
Planting Guides

Summer Blooming Bulbs, including popular varieties such as gladiolus and dahlias, are planted in the spring and bloom in the summer. Most of these bulbs are tropical and require warm weather to be planted. There must not be any danger of frost and your ground temperature must have reached 55 degrees Fahrenheit before planting. Many of our summer blooming bulbs can be planted as perennials in zones 9-10 (zone 8 if mulched), but should be treated as annuals in cooler climates. You can lift them and store them in the fall, or bring patio pots inside before frost. See page 15 of our Planting Guide for a bulb depth planting illustration.

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.
ZoneShipping Status
Zone 2Shipping begins the week of May 15th, 2023
Zone 3Shipping begins the week of May 15th, 2023
Zone 4Shipping begins the week of May 15th, 2023
Zone 5Shipping begins the week of April 24th, 2023
Zone 6Shipping begins the week of April 17th, 2023
Zone 7Now Shipping
Zone 8Now Shipping
Zone 9Now Shipping
Zone 10Now Shipping

As soon as your order is placed you will receive a confirmation email. You will receive a second email the day your order ships telling you how it has been sent. Some perennials are shipped as potted plants, some as perennial roots packed in peat.  The ‘Plant Information’ section describes how that item will ship. All perennials and spring-planted bulbs are packaged to withstand shipping and are fully-guaranteed. Please open upon receipt and follow the instructions included.

Perennials and spring-planted bulbs are shipped at the proper planting time for your hardiness zone. Perennial and spring-planted bulb orders will arrive separately from seeds. If your order requires more than one shipment and all items are shipping to the same address, there is no additional shipping charge. See our shipping information page for approximate ship dates and more detailed information. If you have any questions, please call Customer Service toll-free at (800) 925-9387 or contact us by email.

Shipping Rates

Our shipping rates are calculated based on our actual average shipping costs. We do not seek to profit from shipping fees, so rest assured that our shipping rates reflect an average of what it costs to get our guaranteed products safely to your door.

US Shipping Charges

Merchandise Total Shipping
Up to $19.99$8.99
$20 to $34.99$10.99
$35 to $49.99$12.99
$50 to $74.99$14.99
$75 to $99.99$16.99
$100 and Over$18.99

Canadian Shipping Charges

Merchandise Shipping
Up to $24.99$14.95
$25 to $49.99$19.95
$50 to $74.99$24.95
$75 to $99.99$29.95
$100 and Over$39.95

We charge one low flat rate for shipping our products even if your order requires multiple shipments. If you have any questions, please call us at (800) 925-9387.

Q & A